CUBE ebike chain cleaning tool

This tools helps to clean ebike chain. On normal bike when rotating cranks backward chain is rotating and you can easily clean or oil it. On ebike when rotating cranks backward chain is not moving because there is a clutch in the motor. This is blocker which is cliped on crank and with it chain is moving backward, whitch helps to clean or oil chain.Tool is designet for Cube ebike Stereo Race with Acid cranks.