Tools

Park's Compact Crank Puller is used to remove Shimano Octalink, ISIS Drive and square-taper cranksets. It includes 2 rotating tips (16.3 and 11.3mm) to make the job easy. This is a great tool for your travel and home tool kit.

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

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!

Park's Hex Wrench Set offers all the popular Allen wrenches (1.5, 2, 2.5, 3, 4, 5 and 6mm) in a convenient fold-up unit. The tool tips are chamfered for a positive grip and the one-piece fiber-reinforced-resin handle is light, comfortable, slip resistant and 40% stronger than steel.

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 Professional Cable And Housing Cutter is specifically for use on derailleur and brake cables and housing. It even makes quick work of hard-to-cut shift-cable housing. Its cold-forged, heat-treated-steel handles won't bend and its precision-ground jaws cut perfectly every time. Its dual-density molded grips are specially contoured for superior comfort and control. Plus, there’s a built-in cable-end crimper and a forming hole for reforming housing ends.

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

Cleans bicycle chain quickly, easily, and effectively — without the hassle and mess of removing the chain from the bike. The Cyclone uses a large solvent reservoir, hundreds of rotating bristles, and a two-step cleaning process to get chains really clean, improve shifting performance, and extend the life of the chain and other expensive drivetrain parts. - Works with all multi-speed bikes (5, 6, 7, 8, 9, 10, 11, and 12-speed) as well as some single-speed models and e-bikes - Strong magnet at the bottom of the fluid reservoir holds metallic particles scrubbed from the chain - Special wicking sponge draws solvent from the chain as it exits, minimizing drips and mess - Sturdy handle makes the Cyclone easy to use and control - Holds 2 fluid ounces (59ml) of solvent

Park's Home Mechanic Pedal Wrench is great for your home workshop and event tool box. This top-quality 15mm pedal wrench provides the leverage you need to remove stubborn pedals. It's made to last from heat-treated steel, and the handle has a vinyl grip for comfort.

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.

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.

A puncture in your tubeless tire doesn't have to be a death sentence for your ride. This handy carry-along tool repairs small punctures and cuts in tubeless bicycle tires without removing the tire from the rim, getting you back on the trail in no time. The TPT-1 easily plugs the hole by inserting one of the 5 included vulcanized rubber plugs into the puncture. This shrinks the puncture down to a manageable size, allowing the tubeless sealant to do its job and reestablish a seal. The unique sliding plug retainer holds the plug in place and prevents it from being pulled back out as the tool is removed. Everything is stored in a compact package that fits easily in a saddlebag or backpack pocket. - Includes 5 vulcanized rubber plugs (refills available — part #2370K) - Dimensions: 89 x 27 x 40 mm (3.5" x 1.1" x 1.6") - Weight: 79 grams (2.8 oz.) with plugs NOTE: Intended for tubeless bicycle tires using sealant only. Not compatible with inner tube systems.

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.

World-famous Park Tool quality wrapped up in a great set of metric combination wrenches. Forged from chrome vanadium steel, chrome plated, meticulously polished, then center dipped in Park Tool blue vinyl for a positive grip.

World-famous Park Tool quality wrapped up in a combination metric wrench. Features both open and 12-point two-way ratcheting box ends. Forged from chrome vanadium steel, chrome plated, meticulously polished, then center dipped in Park Tool blue vinyl for a positive grip. Strong, comfortable, and beautiful!

Accurately gauge the straightness of disc brake rotors while the wheel is mounted in a TS-2.2 or TS-2 Professional Wheel Truing Stand (each sold separately). Park Tool's Rotor Truing Gauge features an infinitely adjustable, finely threaded indicator gauge. It works with any diameter brake rotor.

Park Tool's 750.2 Centering Cone Adaptor increases the size of the centering cone of the HTR-1 and HTR-1B Headtube Reaming and Facing Sets. The 750.2 will allow you to use the HTR-1(B) to ream and face head tubes designed to accept IS, ZS, and 1.5-inch EC headset standards. Before reaming or facing, make sure you have the correct cutting tool and pilot for the headset standard(s) you are using. Please refer to our product pages for cutters and pilots for this detailed compatibility information.

The BBT-16 removes and installs the self-extracting/one-key release caps on SRAM and RaceFace cranks with a 16mm hex hole. Features investment cast steel construction and an option to use 8mm hex for better leverage.

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.

They always say, the right tool for the right job. Park's P-handled Torx Wrenches are available in T6, T8, T10, T15, T20, T25, T30 and T40 sizes. They feature offset handles made from durable nylon with a comfortable, ergonomic design. The wrenches are made of high-torque industrial steel for excellent durability.

Park Tool's Replacement Chain Tool Pin (2-Pack) fits Park Tool's CT-1, CT-2, CT-3, CT-3.2, CT-5, and CT-7 Chain Tools. • Made from hardened alloy tool steel • Uses 7mm or 9/32" 12 pt box end/socket • Sold singly or in pairs

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.

Park's AV-1 Axle Vise makes repairing and overhauling hubs easier than ever. It prevents your axle from spinning while work is done on the hub and it has two different size receptacles so it will work with both front and rear axles.

The Park FR-7 Freewheel Remover fits Falcon freewheels. It's built thin so that removing axle parts is unnecessary. And, it's constructed of durable heat-treated steel.

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. For water bottle, toe clip, fender and rack bosses. The TAP-8 is 5mm x 0.8 for use with water bottle, toe clip, fender and rack bosses.

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-7 is 3mm x .5 for use with rear wheel drop-out alignment screws.

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.

Park's Torx Wrench Set is just what you need to make repairs on many of your bike parts that use Torx (star-shaped) fittings, such as disc brakes, pedals, chainring bolts, and others. It offers the common bicycle wrench sizes (T7, T9, T10, T15, T20, T25, T27, T30 and T40) in a convenient fold-up set. Its composite handle is super strong, comfortable to use and slip resistant.

Dial Indicator Set bolts directly to the DT-3 allowing for greater accuracy and a way to measure results. Now includes an elongated, cylindrical tip that is large enough to work around voids in most rotors.

Park Tool offers premium-quality reamers for nearly any bicycle standard. The reamers below are designed to quickly, accurately, and precisely ream headtubes when used with Park's Head Tube Reamer (HTR), ensuring a perfect headset fit and prfoessional-quality bicycle build. Choose the correct reamer for your application using the following information: - 751.2: This reamer is sized to 30.1mm. This allows a 0.1mm interference fit when pressing the 30.2mm headset of the “Euro” one-inch standard. - 754.2: This reamer is sized to 33.9mm. The allows a 0.1mm interference fit when pressing the 34.0mm headset of the 1-1/8" standard. - 788: This reamer is sized to 43.95mm. It reams head tubes to accept “internal” headset cups with 44.05 - 44.10mm O.D. (1-1/8 ZS standard). It is used with Park Tool's 690-XL Facing Cutter and 750 Centering Cone. - 738: This reamer is sized to 52.1mm. It is used to ream head tubes using the 1-1/2" integrated headset standard. It is used with Park Tool's 690-XL Facing Cutter and 750.2 Centering Cone Adapter. - 789: This reamer is sized to 55.95mm. It is used to ream head tubes to accept “internal” headset cups with 56.00–56.10mm O.D. (1-1/2 ZS standard). It is used with Park Tool's 690-XXL Facing Cutter and #750 Centering Cone Adaptor. - 799: This reamer is sized to 47mm. It is used for cutting the lower head tube on frames using an IS47 bearing for a 1-1/4" integrated headset. It cuts a 45-degree bearing set shoulder.

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

The Park FR-6 Freewheel Remover fits most 4-notch BMX and singlespeed freewheels. It can be held with a wrench or vise and its narrow profile allows use without removal of cones and locknuts.

Quickly, safely and easily set your crown race with Park's CRS-1 Crown Race Setting System. It includes 6 different inserts (3 for 1-inch and 3 for 1-1/8-inch steerer tubes) that ensure full contact with the crown race for precision installation.

The Park FR-2 Freewheel Remover fits SunTour two-notch freewheels. It's built thin so that removing axle parts is unnecessary. And, it's constructed of durable heat-treated steel. (Not recommended for use with SunTour 4- and 6-notch freewheels.)

Park's Crank and Bottom Bracket Wrench is perfect for working on old-style bottom brackets. The HCW-4 utilizes a 36mm box-end head and a pin spanner for your bottom bracket removal and installation needs.

Park's Spoke Wrench For Shimano Wheel Systems is the right tool for the job. It's made of durable tool steel and features 4.4mm and 3.75mm openings to fit all Shimano Wheel System nipples located at the hub and at the rim. It's vinyl-coated for a great grip, too.

The BBT-4 is made for the installation and removal of 6-notch SC-S and AC-H cartridge cups used on sealed cartridge bottom brackets. These bottom brackets have six notches around the outside of each cup. The handle of the BBT-4 is vinyl coated for comfort. The major diameter of the tool is nominally 44mm, and the minor diameter 38mm. The BBT-4 is compatible with the following sealed cartridge bottom brackets: • Campagnolo Veloce • Xenon • Mirage • Daytona • Avanti

A great time-saver! Park Tool's Nipple Driver is neatly designed to self-center and drive conventional nipples quickly and easily during wheel building. The ND-1 is built with a comfortable, dual-density grip and lined with precision bronze bearings to ensure a long, smooth running life. It works with rims up to 50mm deep.

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.

Park Tool's 752 Reamer and Spacer Set allows reaming of bottom bracket frame shells in the BB30 standard. The reamer is sized at 41.94mm. It is used with the HTR-1 Head Tube Reamer and Facer and a 750.2 Centering Cone (each sold separately). The set includes a spacer to stop the reaming depth.

These are the adaptors included with HHP-2, also available separately. Sold as a pair. The adaptors are stepped at 25.7mm, 29.7, and 32.8mm. - For replacement or retrofit to older bearing press tools - Adapts older HHPs to fit headcups for 1" and 1- 1/8" - Multi-step adapters fit most press fit cup applications

Made for the rigors of everyday shop use, this adjustable tap handle fits many common bicycle taps. • Fits most metric taps from M1.6-M8 • Fits most standard taps from #0-5/16”

Professional quality component hex driver precisely machined to exact standards to ensure a perfect fit on compatible component fasteners. Featuring an ergonomic, CNC machined, perfectly balanced 6061 aluminum handle hard anodized to take the rigors of everyday use.

A professional level tool set designed and built for portability. The EK-3 is perfect for team and event mechanics or the home mechanic who wants the ultimate portable tool kit. Neatly organized in Park Tool's world-famous BX-2.2 Blue Box Tool Case, this tool kit features 56 of their best tools to do hundreds of repair and maintenance tasks. Plus, the bomb-proof Blue Box features pockets, pouches, straps and open space to add more tools and parts! Kit Includes: - ATD-1.2 Adjustable Torque Driver - AWS-1 Three-Way Hex Wrench Set: 4, 5, 6mm - BBT-9 Bottom Bracket Tool for 16-Notch External Bearing Cups - BBT-32 Bottom Bracket Tool for 20 Notch Shimano and ISIS Drive - BO-2 Bottle Opener - 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 - DCW-1 Double-Ended Cone Wrench: 13/14mm (2) - DCW-2 Double-Ended Cone Wrench: 15/16mm (2) - DCW-3 Double-Ended Cone Wrench: 17/18mm - 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 - HCW-15 36mm/32mm Headset Wrench - HMR-8 Shop Hammer - HT-8 8mm Hex Tool - HXS-1.2 Hex Wrench Set - LP-7 Utility Pliers - MLP-1.2 Master Link Pliers - MW-8 Metric Wrench: 8mm - MW-9 Metric Wrench: 9mm - MW-10 Metric Wrench: 10mm - PAW-12 12" Adjustable Wrench - PW-4 Professional Pedal Wrench - RR-12 Tape Measure - SW-0 Precision Spoke Wrench: .127" - SW-2 Precision Spoke Wrench: .136" - SZR-1 Shop Scissors - TL-6.2 Steel Core Tire Levers - TWS-1 Torx Compatible Wrench Set

A complete tool set to work on both Campagnolo and Fulcrum Ultra-Torque and Power Torque crank and bottom bracket systems (each sold separately). The CBP-8 includes a beefed-up bearing and crank puller and all the fittings necessary to remove and install both systems. - Bearing Puller That Fits Both Power Torque And Ultra-Torque - Crank Puller For Power Torque - Bearing Setter For Both Power Torque And Ultra-Torque - Removal Adaptor For Power Torque Crank Bearings - Removal Protection Pads For Use With Carbon Cranks - Removal Protection Adaptor For Use With Aluminum Crank Arms - Crank Removal Extension Plug For Power Torque

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.

The 37-piece SBS-3 from Park Tool is a comprehensive, shop-quality set of sockets, hex bits, and Torx compatible drivers selected specifically to tackle a wide variety of common bike repair needs. The SBS-3 also includes flat-faced sockets in common sizes for work on suspension forks. Ideal for use with Park Tool torque wrenches, the 3/8" drive bits and sockets are forged from tough, chrome vanadium steel and nickel chrome plated for lasting durability.

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.

Engineered for fit, function, and leverage, these L-shaped shop-quality hex wrenches are a must have for every workshop. - High-torque, industrial steel wrenches - Straight hex shaft on the short side, ball end on the long side - Includes 2, 2.5, 3, 4, 5, 6, 8, and 10mm - Comfortable, ergonomically designed nylon handles fit perfectly in your hand - Durable wall/pegboard mount tool holder allows easy access and organization

The BBT-30.4 Bottom Bracket Bearing Tool Set is designed and built to install and remove the bearings used in BB30, PressFit 30 (PF30), 386EVO, BBright and PF121 bottom bracket systems. The BBT-30.4 features a bushing set used in conjunction with a head cup press to quickly and precisely press the BB30 and PF30 bearings in the bottom bracket shell. The included BB30 bearing remover works from inside the shell to easily push out bearings.

In the tradition of our premium quality fold up tools, the BO-4 is a combination corkscrew and bottle opener complete with a knife/foil cutter. This multi-tool folds for storage and features all stainless steel mechanisms housed in a forged aluminum case. This is a top quality beverage tool perfect for the workbench, toolbox or wine bar.

The DTD-10 is a precision component Torx®-compatible driver machined to exact standards to ensure a perfect fit on compatible component fasteners. The stubby size of the DTD-10 provides extra control during removal and installation of delicate hydraulic brake fittings. Featuring an ergonomic CNC-machined hard-anodized 6061 aluminum handle and a precision T10 tip. - T10 Torx®-compatible wrench - Not intended for high-torque applications - Total length: 3.75" (95mm) - Shaft length: 1.7" (43mm) - Weight: 2.22 oz. (63g)

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

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 Bottom Bracket Wrench removes and installs Shimano Hollowtech II, Race Face X-type, FSA MegaExo, Campagnolo Ultra-Torque and TruVativ Giga X-pipe bottom brackets. Laser cut for a precise fit, one end of the BBT-9 securely engages the 16 cup notches, while the other end engages the 8 internal splines of the crankarm adjustment cap.

This dual-sided brush is specifically designed for cleaning hard-to-reach areas of the bicycle drivetrain. The long, stiff bristles of the GSC-3 are narrow enough to reach between the gears of tightly-spaced modern cassettes, while the slim contoured end is capable of picking grit and grime out of tight spaces such as derailleur pulley wheels.