If you need one chain tool for all your bikes then the Damselfly Universal Chain Tool is designed for you. Compatible with all 9, 10 & 11 speed chains & selected single speed chains, chances are you will never need another chain tool every again. A durable CNC machined aluminium construction creates a tough, workshop resistant tool whole a large, easy to use handle allows for precision removal & insertion of chain pins. Smart Cradle System Innovative spring secures the chain during breaking & makes it easy to drive the pin out accurately & easily. The cradle could be adjusted according to different chain size Special Steel S2 Special steel S2 is super rigid material which guards against wear & tear. Aluminium Construction Aluminum is strong, light-weight & durable material constructions. CNC Machined CNC machined ensures precision & durability of metal parts.