JAERBEE TOOPRE Bike Chain Keeper Holder Dummy Hub Bicycle Chain Keeper Tool Quick Release Thru Through Axle
- Virtual flywheel / sliding rod design of chain tension device / H-type chain groove structure / small volume design / magnetic storage
- Sliding design, using aluminum alloy sliding rod design, can slide left and right smoothly
- H-type chain groove structure avoids chain jumping when changing speed
- The flywheel inlaid magnet can be adsorbed on the iron tool wall. At the same time, there is a magic button placement slot, which can absorb a pair of magic buttons for standby
