Right Tool to remove the bottom bracket and assemble CYC Motors
Cartridge B.B. tool to remove the original bottom bracket of your bike and make space for your new Bafang. It´s also necessary for mounting the CYC Motors - to fix the part on the torque sensing axle.
Be aware that the treaths are opening differently:
On the side of the chainwheel (right) open it clockwise - on the other side (left) counterclockwise.