Bike Bicycle Tail Hook Rear Derailleur Hook Converter Extend with Screw
2 is the carrier for the tension adjustment screw of the derailleur
3. When you accidentally crash the car, you may encounter the transmission, which may cause deformation and affect the speed change function. The rear groove is made of aluminum alloy and allows a certain deformation to protect the transmission from damage. When it is seriously bumped, the rear hook can be broken and replaced with a new one. It is possible to reduce the cost of frame maintenance
The rear hooks of different styles of frames may also be different (the function is the same), so when buying a frame, ask if you have a rear hook
When installing, just put it in the slot at the rear of the frame and fix it with a hexagon socket head screw.








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