Don't know if this would be what you want, but I bought a motor with an attachment to hold my rod while turning - it was a pvc cap, 2", with a hole drilled in the top - this accepted a screw which went into the motor, then there 3 holes drilled around the edges with nylon bolts going thru them to tighten down around the butt of the rod. Works fine, will post a pic if this is what you are looking for.