Constant speed motor and soft rubber drum with unique hookandloop system The slow constant speed of the drum and tilt action allows for more controlled and even sanding 15 hp capacitor motor, 115 V, AC only, 60 cycle, 1phase, runs on 11 A Drum standard 8 in W, high density foam rubber cover on aluminum core with hookandloop cover, takes 8 x 1758 in paper, drum speed 1800 rpm, constant speed, dimensions 28 in L x 15 in W x 34 in H, weighs 115 lb Includes 25 ft power cord with twist lock connectors and standard plug, dust bag and wrenches