This 1.0mm locking nut is required on certain bikes with unusual derailleur hanger setups. Predominately used on OPEN (U.P, U.P.P.E.R, WI.DE) and Santa Cruz bikes but with other occasional manufacturers also. See these instructions for how it can be used.
When installing please ensure there is grease on the thread and torque it to around around 10Nm.
Weight 3g
In stock