Precisely machined for a perfect fit, this 8-notch tool removes and installs the lockring that retains front chainrings found on Bosch Gen 2 e-bike motors after the crank arm is removed.

– Fits Bosch Active Line (chainrings less than 20 teeth), Performance Line and Performance Line CX models
– For lockrings with 50mm outside diameter and 8 notches
– Replacement for Bosch 0275009003 tool
– Torque wrench compatible 3/8-inch square drive
– Constructed of 4140 heat treated steel and plated for long life