

tool for chainring lock ring on Bosch E-bike BOSCH® Classic Line and Classic+, Gen 1 ( lockring diameter O.D. 59.9 mm), BOSCH® E-bike from 2010 to 2013 (partly up to 2014).
Use with 1/2" Dr. or 24 mm open wrench
Key with 8 pins
Outside diameter of the pins: 60mm
Inner diameter of the pins: 56mm