Compatible with 5-11 speed cassette Adjustable jaw fit 10T-23T cogs. Solid locking handle fixes on sprocket easily. Super B patent jaw cogs 10-23 teeth 5~11 speed sprocket firmly and easily. Single hand operating makes the other hand free to operate freewheel remover. Protects your hands from injuries while using. Use with freewheel remover, such as TBFW30