High Torque Clock Movement (Silent Sweep) Extended Shaft w/8-1/4 In. (No4) Balanced Hands and Wall Mount motor size: 2-1/8" sq. x 5/8 thick x 5/16" dia. shaft motors threaded shaff is 7/16" (11mm) (total 13/16" including hand stem) high torque silent sweep motor with extended shaft black metal hands and hub may be painted any color 3 year factory warranty