A-BO Motor clamp or a bracket is used to mount the motor tightly on any solid surface. Thus it increases the usability of the motor & makes motor mounting very convenient. This clamp or mount bracket is designed for BO motors. A DC motor clamp or a bracket is used to mount the motor tightly on any solid surface. Thus it increases the usability of the motor & makes motor mounting very convenient. Clamp for mounting BO Series Motors. It comes with holes that align onto the motor holes and holes for mounting the clamp onto a chassis.