CYCLUS TOOLS Mounting pliers for Bosch crown, designed for extracting and inserting the Bosch BDU31 insertion bushing. With this tool, it is possible to remove old inner bushings / plastic bushings and install new ones when replacing the motor of a Bosch BDU31 system (Bike Drive Unit). Replacing these inner bushings / plastic bushings, located between the motor and the frame, is mandatory every time the motor is replaced. Simply apply the pliers and press out the worn plastic component, then insert the new one. PROFESSIONAL BICYCLE TOOLS – Safe, fast, simple, and understandable for everyone, just as you would expect from Cyclus Tools.