Unique Bargains Metal Rear Derailleur Hanger Gear Tail Hook Convertor for Bike Bicycle w Bolt

Universal fit for most of bike, cyclocrossbike, hybrid bike, mountain bike, road racing bike,
The upper end of the tail hook is connected with the frame, and the lower end is connected with the rear dial of the transmission.Play to protect the transmission after dialing role.
Reolacing your old or broken bicycle tail hook.
Easy to install and use, it is a good replacemnt for your Mountain Bicycle, Street bikes, Sports bikes, etc.
Provide you a safer cycling experience.