Tools

To prevent poor shifting and uneven drivetrain wear, most manufacturers recommend chain replacement at or before 1% stretch. Now you can quickly and accurately determine the wear and stretch of any chain with Park's Chain Checker. Simply insert the Chain Checker’s pins into 2 links, press the swingarm gauge tight, and then check the gauge window for an accurate reading!

A professional quality shop chain tool that works on 5-speed to 12-speed Road and Mountain Bike derailleur chains*, including SRAM AXS 12 speed, as well as 1/8-inch and 3/16-inch chains. The CT-3.3 features an adjustable locating shelf so it works on any width chain to remove and install chain rivets. Built to last and easy to use, the CT-3.3 features a comfortable handle, investment cast steel body and replaceable driving pin (#CTP). *The CT-3.3 will install, but not peen, Campagnolo 11 and 12-speed chain rivets. - Comfortable T-handle - Replaceable driving pin (CTP) - Investment cast steel body - Adjustable locating shelf

Park Tool introduced the bicycle world to the 3-way hex wrench set over 30 years ago. Our 3-way wrenches fit perfectly in the palm of the hand and provide excellent leverage, making them a favorite of countless shop mechanics worldwide. AWS-1 FEATURES - 4mm, 5mm, and 6mm hex set - Wrenches made from industrial tool steel, through hardened and tempered for long life - Chamfered tips for a perfect fit

Park's BBT-18 is a heavy duty, investment cast tool for installing and removing all Shimano, ISIS Drive, and ISIS Overdrive 8-notch bottom bracket cups.

• Updated to be stronger, smoother, and more versatile • Features a new material and redesigned tip for easier entry into just about any tire, including tubeless • The unique design lifts the tire away from the rim and features a spoke hook to use when multiple levers are needed • This set includes 3 tire levers

A favorite of shop mechanics for over 30 year's, Park's CCP-22 Crank Puller removes crankarms that feature square tapers, and those that fit on Power Drive and Power Spline bottom bracket interfaces. The long, comfortable, built-in handle and fine thread provide the leverage needed to remove even the tightest crankarms. And, there's a rotating tip to ensure smooth operation and long life.

Park's Chainring Nut Wrench makes chainring bolt installation and removal easy. It securely holds the slotted nut to prevent spinning when tightening or loosening the bolt. And, it's double-ended to fit most slotted-type nuts, including Campagnolo chainring bolt nuts.

Park's Gear Clean Brush has a handle on one end with a curved, serrated edge perfect for cleaning between cassette cogs. The other end's tough nylon bristles are ideal for cleaning the derailleurs, chain and other drivetrain parts to keep them clean and prevent premature wear. It also works great on brakes and other components that collect dirt and grime. The GearClean easily fits in a toolbox or pack.

Park's Heavy-Duty Tire Levers handle the toughest tire-and-rim combinations including difficult downhill and freestyle tires. Their specially designed tips engage the tire bead so it can be removed with just two levers. Plus, these beefy, forged-steel levers are a full 8-inches long for superior leverage.

An economical option for safely and accurately tightening fasteners to proper torque specifications. With a simple gauge readout, the TW-1.2 is intuitive and easy to use, and applies up to 14 Nm of torque to any fastener or component with left or right-handed threads. Perfect for low-torque applications such as stem bolts, levers, and carbon fiber components. 3/8" drive for compatibility with all Park Tool sockets, bits, and crow feet. - 0 to 14 Newton meter (0 to 140 inch-pound) range - 3/8" drive - Reads and registers torque values for both left hand and right hand threading - Length: 11.5" (292 mm)

A great way to hold small parts, tools and components during a repair, Park Tool's Benchtop Overhaul Mat features multiple small pockets and one large work area. It's perfect for suspension work or to organize parts for installation. • Made of a rubber-like PVC • Cleans easily and looks great on any bench • Measures: 14.7” x 7” (38cm x 18cm)

Park's Valve Core Tool is great for tightening, removing and installing Schrader and Presta valve cores (the cores are inside the valve), and also Presta valve extenders that have 5mm wrench flats. It's a handy tool to save a tube when all that's wrong is a broken valve, and it also lets you remove valves to easily insert sealant.

Park's I-Beam Mini Fold-Up Hex Wrench/Screwdriver/Torx Set with Chain Tool includes 1.5, 2, 2.5, 3, 4, 5, and 6mm Allen wrenches, a socket 8mm Allen, a regular screwdriver, a T25 Torx tool (for disc-rotor bolts), a tire lever, spoke wrenches and a chain tool. The I-Beam conveniently fits in pockets and packs, too.

Shop-quality, adjustable torque driver that limits torque applied to fasteners, preventing over-tightening and damage to lightweight components. The ATD-1.2 features all-metal internal construction with a comfortable, ergonomic composite molded grip. Each tool is assembled and calibrated at Park Tool's factory in Minnesota.

Proper frame preparation is very important. Park Tool's Head Tube Reaming and Facing Set (33.8mm reamer) combines reaming and facing of the head tube to create a perfect fit for most sizes of head cups. The HTR-1B comes with a reamer of 33.9mm for the 1-1/8 inch headset standard. Includes: • 33.9mm reamer (part #754.2), and four different size pilots (29.8mm, 30.0mm, 33.8mm, and 36.8mm) • 690 Facer • Quick-release, quick-adjust feature: bottom portion slides off and on easily without threading SHIS terminology: The HTR-1B as stock will face frames of EC29, EC30, EC34 and EC37. It will ream frames of EC34. Accessories will allow service in other standards.

This combination chain whip and freewheel / lockring remover wrench is heat treated to prevent bending and flexing, with a molded handle for comfort. - 1/8-inch model works on 1/8-inch chains and sprockets - 1-inch (25.4mm) box-end wrench fits Park Tool Freewheel/Cassette Lockring Tools - Features hardened pins to keep the chain in place

Park's Pin Spanners are designed for maximum usefulness and versatility at the best value. Tough high-carbon tool steel is used to ensure long life and the handles are vinyl coated for a great grip and color-coded for easy identification. The red-handled SPA-2 is for turning the bearing cones on most freewheels and the one-key-release rings on crankarms.

Park's Threadless Star Nut Setter makes it quick and easy to install star-fangled nuts used with 1-inch and 1-1/8-inch threadless headset systems. Using a durable steel driver and built-in guide, the TNS-4 perfectly aligns the star-fangled nut and sets it to the proper depth every time. Plus, the unique design virtually eliminates pinched fingers!

Park's Threadless Star Nut Setter makes it quick and easy to install star-fangled nuts used with 1-inch and 1-1/8-inch threadless headset systems. Using a durable steel driver the TNS-1 sets the star nut to the perfect depth every time.

Park's Cone Wrenches are made of durable tool steel and are nice and thin to fit on the small-clearance cones found on hubs and other bearing assemblies. Plus, they work as regular wrenches, too. They feature Park's special Y heads that put more material where it's needed for excellent durability and strength. Most applications require at least 2 cone wrenches. If you have questions please contact us and we can recommend the correct sizes for your needs.

The 4th edition of the Big Blue Book of Bicycle Repair is updated with the latest information, procedures and techniques and covers everything from minor adjustments to complete overhauls. The BBB-4 features clear, step-by-step instructions, high quality color photos and useful charts and graphs to thoroughly explain and demonstrate hundreds of repairs. Written by one of the world’s leading authorities on bicycle repair and maintenance, Park Tool Director of Education, Calvin Jones, the Big Blue Book is the perfect reference guide for nearly any level mechanic and every bike. New information and topics included in the BBB 4th edition: - 12-speed and 1x drivetrains - Tubeless tires - Disc brakes - Electronic shifting - New wheel building content - Updated headset and bottom bracket standards - Updated torque specifications - Updated troubleshooting tables

• 12” Tungsten steel hacksaw blade specially designed to smoothly cut carbon composite handlebars, forks, seat masts, seat posts, etc. • Fits Park Tool SAW-1 Hacksaw and most 12” hacksaws • The CSB-1 is designed for use with the SG-8 Saw Guide. NOTE: Similar to a grinding stone, do not use this blade on aluminum

Park Tool's Derailleur Clutch Wrench is a small, thin wrench with 5.5mm and 3mm openings designed to fit the rear derailleur clutch tension adjuster on Shimano XT, SLX, Deore, Saint and Zee rear Shadow Plus (+) derailleurs and all previous Shadow Plus models.

Park Shop Cone Wrenches are made of thin tool steel to fit the low-clearance adjusting nuts and cone flats on hubs and other bearing assemblies. Their special Y-heads put more material where it's needed for greater strength. Most applications require several cone wrenches, so Park gives you a whole set, featuring 13mm - 24mm, 26mm and 28mm wrenches to suit your repair needs.

Professional quality T-Handle hex wrench built for speed, efficiency, leverage and a perfect fit. - Carefully selected combination of Chrome Vanadium and S-2 tool steels - Unique anodized aluminum Speed Spinner makes running long bolts in and out quick and effortless - Machined, chamfered tips allow easier insertion into hex fittings - Integrated “Strip-Gripper” twisted hex that makes removal of most bolts with stripped or oversized hexes fast and easy - Sliding T-handle creates increased leverage and multiple access positions

Park's professional-quality, precision-sized spoke wrenches are hardened and chrome plated for long service. Wrenches are vinyl coated in one of four colors indicating the size at a glance. You will find these wrenches in virtually every professional bike shop and every shop mechanic's personal tool stash. Make sure you have the sizes you need in your home toolbox and bike bag.

Frame Taps will become a lifesaver at some time for virtually every mechanic. As with all Park Tool Taps, these are made of high carbon steel and are precision ground. Park Tool Frame Taps cut easily and fit conventional tap handles. The TAP-10 is a 10mm x 1mm thread, the same thread for the derailleur hanger.

The DT-5.2 is engineered and built to accurately face front or rear disc brake mounts so they are precisely aligned to the rotor. - Faces any IS Mount, Post Mount, or new Shimano Flat Mount, including low clearance, chainstay mounts - Telescoping axle adaptors allow use with any configuration of open or thru-axle dropouts and dropout widths (including Boost 110, Boost 148 and all fat bike axles) - Includes two facing cutters: IS Mounts Post and Flat Mounts - Includes storage case

Park handles all of your screwdriver needs with their Shop Screwdriver Set that includes 3mm and 6mm regular, and #0 and #2 Phillips screwdrivers. They feature heat-treated chrome-vanadium tips and shafts for maximum durability plus dual-density grips for top control and comfort.

Frame and Fork Taps will become a lifesaver at some time for virtually every mechanic. These taps are made of high-carbon steel and are precision ground. Park Tool Frame and Fork Taps cut easily and fit conventional tap handles.

Never be left looking for an errant wrench when you have Park's Metric Wrench Set. It includes 12 high quality Park metric wrenches from 6 to 17mm in diameter, featuring both box and open ends. They are all forged from chrome vanadium steel, then chrome plated for durability and dipped in Park Tool blue vinyl for outstanding comfort and ease of use.

Designed and built especially for singlespeed bikes, Park's SS-15 Single Speed Spanner is a durable forged-steel tool with a 15mm socket wrench for axle nuts, 15mm open-end wrench for pedals, a tire lever, and a bottle opener. It's just the right size to take along on rides and is great for wrenching in your shop too.

Park's Shop Screwdrivers are pro-quality tools featuring durable and precise heat-treated chrome-vanadium tips and shafts and dual-density handles for an excellent grip.

Park's Hex Wrenches are every mechanic's best friend. They are constructed from industrial quality steel for durability and feature chamfered tips for a precision fit. And, their convenient L shape is perfect for jobs that require lots of leverage or for getting to hard-to-reach bolts.

Park Tool's Bottom Bracket Tapping & Facing Set is a precision tool system which provides a piloted means of tapping the threads in the bottom bracket shell of a frame. After tapping, the taps act as guides to keep the included facing cutter perfectly square with the axis of the bottom bracket for cleanup of the faces of the bottom bracket shell. The BTS-1 includes English taps, 1.370" x 24 TPI right hand thread for the adjustable cup, and 1.370" x 24 TPI left hand thread for the fixed cup. Italian thread taps, 36mm x 24 TPI right hand thread (Part #693) for the adjustable and fixed cups, are available as accessories.

Frame Taps will become a lifesaver at some time for virtually every mechanic. As with all Park Tool Taps, these are made of high carbon steel and are precision ground. Park Tool Frame Taps cut easily and fit conventional tap handles. The TAP-9 is 6mm x 1mm for cantilever brakes and large fender bosses.

A great shop accessory made to hold a wide variety of axles, spindles and any Park Tool Freewheel Remover/Lockring Tool. Made from precision extruded aluminum.

A daily-use, shop version of Park Tool's world-famous CM-5.2 Chain Scrubber. The CM-25 features a super-tough die-cast aluminum case and handle, plus a unique brush/sponge replacement cartridge that makes it easy to keep it running smoothly and working properly. Park Tool's proven four-sided scrubbing action makes thoroughly cleaning chains quick and easy. A shop quality cleaner built to give years of constant use. - Proven chain scrubbing technology leaves chains sparkling clean - Durable A380 aluminum die cast case and removable handle - Dual-sided sponges and wicking pads to help reduce drips - Rotating brushes clean on all four sides of every link - Brush and sponge cartridge quickly and easily clicks in and out (RBS-25) - Locking cover with stainless steel hinge pins - Choose drip or immersion fluid application methods - 100% serviceable

Professional quality T-Handle star-shaped wrench built for speed, efficiency, leverage and a perfect fit. - Carefully selected combination of Chrome Vanadium and S-2 tool steels - Unique anodized aluminum Speed Spinner makes running long bolts in and out quick and effortless - Sliding T-handle creates increased leverage and multiple access positions

A handy tool designed to make installation and removal of bicycle electronic shifting wires and batteries quick and easy. - Durable composite body is durable and prevents scratching of expensive components - Angled Shimano Di2 E-TUBE ends allow for both installation and removal in tight spaces - Universal coin cell tool helps remove and install battery covers on SRAM eTap

The PK-5 includes over 90 of our best shop tools selected with versatility in mind. A great way to outfit a pro bench or to set up a dream home workshop. The PK-5 is an impressive, professional set of specialty tools that can help you perform hundreds of bicycle repair and maintenance procedures. An investment you'll use and appreciate for decades. Kit Includes: - ATD-1.2 Adjustable Torque Driver - AWS-1 Three-Way Hex Wrench Set: 4, 5, 6mm - AWS-3 Three-Way Hex Wrench Set: 2, 2.5, 3mm - BBT-10.2 Adjusting Cap Tool: For 8-Spline Hollowtech II - BBT-22 Bottom Bracket Tool - BBT-69.2 Bottom Bracket Tool - BO-2 Bottle Opener - CBW-1 Open End Wrench: 8/10mm - CBW-4 Open End Wrench: 9/11mm - CC-4 Chain Checker - CN-10 Professional Cable and Housing Cutter - CNW-2 Chainring Nut Wrench - CP-1.2 Cassette Pliers - CT-3.3 Chain Tool - CWP-7 Compact Universal Crank Puller - DAG-2.2 Derailleur Hanger Alignment Gauge - DH-1 Dummy Hub - DP-2 Threaded Dummy Pedal - DSD-2 Derailleur Screwdriver: Cross Tip - DSD-4 Derailleur Screwdriver: Flat Blade - DT-2 Rotor Truing Fork - FR-5.2H Cassette Lockring Tool with Handle - GSC-1 GearClean Brush - HMR-8 8 oz. Shop Hammer - HXS-1.2 Hex Wrench Set - MLP-1.2 Master Link Pliers - NP-6 Needle Nose Pliers - PAW-6 6" Adjustable Wrench - PH-1.2 P-Handle Hex Wrench Set - PW-4 Professional Pedal Wrench - RR-12 Tape Measure - SBC-1 Spoke, Bearing and Cotter Gauge - SBS-1.2 Socket and Bit Set - SCW-13 13mm Shop Cone Wrench - SCW-14 14mm Shop Cone Wrench - SCW-15 15mm Shop Cone Wrench - SCW-16 16mm Shop Cone Wrench - SCW-17 17mm Shop Cone Wrench - SCW-18 18mm Shop Cone Wrench - SCW-19 19mm Shop Cone Wrench - SP-7 Side Cutter Pliers - SW-0 Precision Spoke Wrench: .127" - SW-2 Precision Spoke Wrench: .136" - SWR-8 3/8" Drive Ratchet Handle - SZR-1 Shop Scissors - TL-1.2 Tire Lever Set - TL-4.2 Tire Lever Set - TL-6.2 Steel Core Tire Levers - TWS-1 Torx Compatible Wrench Set - UP-SET Utility Pick Set - VC-1 Valve Core Tool - ZP-5 5" Flush Cut Pliers

The BBP-AOS is used in conjunction with the BBP-1.2 Bottom Bracket Bearing Press Kit to extract press fit bottom bracket bearings, cups, and adaptors. The BBP-AOS utilizes an expanding collet and extractor cup system to safely remove bearings without requiring impact. Also included are eight installation drifts for pressing bearings into pre-installed cups. - 8 precision-machined extractor cups and 5 hardened collets for compatibility with most bearing IDs and bearing/cup ODs - 8 installation drifts for standalone bearing installation - Organized in a convenient storage case - Full list of compatible bearing inner/outer diameters found on instructions/parts diagram NOTE: The BBP-AOS requires the BBP-1.2 Bottom Bracket Bearing Press Set for use. The BBP-1.2 and BBP-AOS are also available as a complete set (part # BBP-2).

The Park FR-4 Freewheel Remover fits Atom, Regina, splined Zeus and some Schwinn-approved freewheels. It's built thin so that removing axle parts is unnecessary. And, it's constructed of durable heat-treated steel.

Having trouble getting at internal spoke nipples? Park's Square Socket Internal Nipple Spoke Wrench comes to your rescue. The extra-long socket fits recessed nipples on most deep-section aero wheels. And, the ergonomic handle is comfortable even after you've built wheels for the entire team.

Choose the perfect tool for the job with Park's P-Handled Hex Wrenches. These top-shelf Allen wrenches come with offset handles made from durable nylon in a comfortable, ergonomic design. They are made of chrome vanadium for exceptional durability. The long shafts feature Bondhus heads for accessing hard-to-reach bolts and the short ends are chamfered for extra grip and high-torque applications.

The double-ended HCW-18 spanner fits slotted adjusting cones found on some one-piece cranks. The opposite end fits three-notched fixed-cones on some one piece cranks.

Destined to become a classic, the Master Spoke Wrench is an investment cast workhorse poured from the best steel, precisely machined, heat treated for hardness, then polished and plated. The result is a smooth, solid, perfectly balanced steel spoke wrench designed and built to fit perfectly in your hand and provide years of every day service. The SW-20.2 is a three-sided spoke wrench the same size as the SW-0 (black) for .127” (3.23mm) nipples. Weight: 39g

Park Tool's SW-11 is a forged, double-ended spoke wrench designed to fit select Campagnolo wheels. Precision machined, plated and vinyl dipped for comfort and long life. It fits Campagnolo 5.5mm and 6.0mm hex spoke nipples.

Designed and built with the specific needs of the bike mechanic in mind. The RP-SET.2 includes five professional quality pliers for internal snap rings and one for external snap rings. Pliers are made from forged, heat treated cro-moly steel with a return spring and vinyl dipped grips. RP-1: .9mm straight internal. Opens from 22mm down to 0 (tips touching) RP-2: 1.3mm bent internal. Opens from 22mm down to 2mm (center to center) RP-3: 1.3mm bent external. Opens from 2mm (center to center) up to 18mm RP-4: 1.7mm bent internal. Opens from 21mm down to 2mm (center to center) RP-5: 1.7mm straight internal; Opens from 25mm down to 0 (tips touching)

Park Tool has long provided some of the best cutting and machining tools in the bicycle industry. Their 690 Cutting Facers reflect their commitment to maintaining this high level of quality. Please read below for use and compatibility information specific to each size cutter: - 45mm (690): The 690 cutting facer is used on the HTR-1, HTR-1B, BFS-1, and BTS-1 cutting and facing tools. The facer has an outside diameter of approximately 45mm. - 57mm (690XL): The 690-XL is a larger version of the 690 facer for the HTR-1 Head Tube Reamer and Facer. It has a nominal outside diameter of 57mm. It may be used in conjunction with the 788 reamer. It is also used with the 767 Pilot or the 768 Pilot to face only the large diameter headtubes used with, "low profile," ZS-type headsets. - 65mm (690-XXL): The 690-XXL faces large headtubes. It has a nominal outside diameter of 65mm. Use the 690-XXL facer with the 750.2 Centering Cone Adaptor and 789 Reamer or 790 Pilot when facing head tubes with internal diameters of 55.95–55.90mm.

This is a single replacement pin for Park Tool HCW-4 and SPA-6 pin spanner wrenches.

The Park Tool Fold-Up Hex Wrench Set combines 4, 5 and 6mm hexes, a flat blade screwdriver and a T25 Torx compatible driver into one convenient fold-up tool. Its multi-position composite handle is comfortable, lightweight, slip-resistant, and 40% stronger than steel handles.

Designed for the casual cyclist, the economical WTK-2 contains the tools needed for many basic adjustments and repairs at home or on the road.

Securely holds the TS-4 Professional Wheel Truing Stand and tilts 20 degrees from front to back for comfortable wheel work and sight lines at any bench height. Features a wide, sturdy base, small parts compartments, spoke wrench holders, and is constructed of a durable composite material.

The BX-2.2 features updated pallet configuration and storage options to help you keep your tools secure and easily accessible. The expanded custom designed tool pallets, including dual-sided pallet wings, are all housed in a virtually indestructible composite travel case. Designed and built for the traveling mechanic who demands the best! - Custom designed tool-holding pallets with loops and pockets - Folding, dual-sided pallet wings - Front tool pallet that stores securely inside during transport - Dent-proof composite shell built around an aluminum frame - Key lock - Nominal dimensions: 19" x 14.85" x 8.5" (48.25 cm x 37.7 cm x 21.6 cm), 13.2 lbs. (6 kg)

A purpose-built wrench designed for compression nuts, nipples, and other fittings found on hydraulic brake systems. The five-sided flare wrench head evenly spreads out the force being applied to the wrench, reducing the risk of damage to fasteners and brake hoses. Features a slim, low-profile design to access low-clearance fittings found on hydraulic levers and calipers. Built-in 3/8" fittings allow for use with a torque wrench to achieve proper torque. - Double-sided wrench features 7mm and 8mm wrench openings - Dimensions: 4" x 0.75" x 0.15" (101mm x 19.5mm x 4.5mm) - Weight: 44g (1.55 oz.) NOTE: When using with a torque wrench, the MWF-3 should be installed at a 90° angle from the beam of the wrench.

Say goodbye to jumbled drawers and crowded bit holders. The JH-3 keeps your bits, sockets, and other tools well-organized and within reach, with three rows of moveable bit holders to fit up to 45 tools with 3/8" drive fittings. Precision-cut openings along the back allow for convenient storage of torque wrenches, drivers, and ratchets. Integrated mounting holes allow for straightforward installation on pegboard or any solid surface. - Assembled dimensions: 14" x 5.8" x 6.2" (356 x 148 x 158 mm) - Mounting holes are 10" (25.4 mm) from center to center - Mounting hardware not included - Durable powder-coated steel construction

The BK-UK includes six new and revised parts for the Park Tool BKD-1 and BKM-1 Hydraulic Brake Bleed Kits, allowing for compatibility with the latest brake models from popular manufacturers. Includes: - Part #2600A (x2) — M4 x 0.8 adaptor for use with SRAM DB8, Trick Stuff, and Campagnolo mineral oil brake systems - Part #2588.2 — Thin-walled hose compression sleeve for internal bleed nipples, such as those found on Shimano mineral oil brake systems - Part #2574A — Hose assembly with integrated fitting for bleed nipples such as those found on Shimano mineral oil brake systems - Part #2615-2 (x2) — 11 mm bleed blocks for use with Hayes DOT brake systems All parts also available individually. NOTE: The seals on each part are designed for one type of fluid — DOT fluid or mineral oil — and should be used only on the systems they were intended for. DOT fluid and mineral oil should never be mixed in the brake system or in their respective service tools. Cross-contamination of brake fluid may cause seal failure which may result in brake failure.

A precision CNC-machined aluminum tool for the installation and removal of select threaded bottom brackets with 16-notch tool fittings, including Shimano XTR BB93, Dura-Ace BB9000, and Token bottom brackets. Manufactured in-house by Park Tool, anodized for easy identification and featuring a ratchet/torque wrench-compatible 3/8" drive. The BBT-49.3 features integrated threads for full compatibility with the Park Tool BBT-RS Bottom Bracket Tool Retaining System (sold separately). The BBT-RS uses an adjustable spring-based tension system to apply consistent, adjustable pressure to the tool, ensuring full engagement with the tool fitting and preventing slippage. Fits 16-notch threaded bottom bracket tool fittings with a major diameter (outside of notches) of 39-40 mm and a minor diameter (inside of notches) of 37.6 mm, including: - Shimano XTR BB93 - Shimano Dura-Ace BB9000 - Token Also fits chainring lockrings on Shimano STEPS square spindle e-bike systems including: - E6000 - E6002 - E6050 - Replacement for Shimano TL-FC38 tool - 3/8" drive fitting

"Take the guesswork out of internal routing. The IR-1.3 speeds the installation of internally-routed cable, housing, electronic wiring and hydraulic hose into carbon fiber, titanium, and aluminum frames. The straightforward guide magnet system utilizes five long guide cables with unique fittings, which can be routed through the frame in a number of ways using the included guide magnet. Everything is neatly stored in a convenient compact case. A true time and frustration saver!??Includes five 188 cm (74"") guide cables with attached magnets and unique fittings: • Barbed adapter — Threads into the end of brake & shift cable housing as well as hydraulic brake hose • Rubber adapter — Securely holds electronic shifting wire such as Shimano® Di2, SRAM® RED® eTAP®, FSA® K-Force® WE®, and Campagnolo® EPS • Di2®-specific adapter — Specially-designed connector clips into the end of Shimano® E-tube® Di2® shift wire, and is perfectly sized to fit into frame holes as small as 6 mm • Di2® EW-SD300-specific adapter — Specially-designed connector clips into the end of Shimano® E-tube® Di2® EW-SD300 shift wire • Reverse-polarity magnet — Used in conjunction with any of the other guide cables - feeds into the opposite end and meets the leading cable in the middle, aiding in routing on frames with tricky interior shapes Also included: • Double-threaded barb — Securely attaches new housing or hydraulic hose to existing housing or hose, allowing for easy replacement without redoing the routing • Guide magnet — routes guide cables through the frame from the outside"