It can replace freewheel for bike repair or chain clean. Insert into the rear dropouts and tighten the quick release. Made of high-quality material, durable and practical to use
Features:
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Easy to Use: Simply remove the rear wheel off the bike. Clamp the chain keeper or dummy hub on the drop-out. Keeps chain out of the way when transporting or wrenching on your bike.
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Dual Function: It is compatible with quick release drop out and 12mm thru-axle.
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Clean & Transportation: YC-521 can be replaced freewheel for bike repair or chain clean Inserted into the right rear dropout when the wheel is removed for cleaning, storing, or transport.
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Compatibility: The quick-release lever allows for fast installation and removal. Works with all derailleurs and 1/8" chain, works on frames with 9mm open-type dropouts. Suitable for all derailleurs and chains
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Material: Aluminum alloy, plastic
