This Aluminum Clamping Mount is great for applications where the perfect alignment is needed. When used in conjunction with a gear motor that has an offset shaft, you can index the motor by sliding the motor forward/aft in the mount or rotating it within the mount. Constructed of aluminum, you can be sure that this mount is not going to budge even in high torque applications. The included clamping screw is a 6-32 x 1/2” zinc-plated socket head screw that uses a 7/64 hex key. Designed for use with our HD Premium Planetary Gear Motors and HD Premium Planetary Gear Motors with Encoders .