IceToolz Bosch Lock Ring Tool M801

The IceToolz Lockring Tool M801 is used for fitting / removal of the front chainring on Bosch electric bike motors. Compatible with Bosch Active / Performance Line electric bicycle motors featuring a small (14-22 tooth) front sprocket - this does not fit later systems that use a larger front sprocket. 51mm outer diameter 8 notches (4.75mm wide) High quality steel Use with a 1/2" drive 2-way ratchet You will also require a crank puller to remove the crankarm.