MASTERROTOR AR-303 Antenna Rotator System The AR-303 Kit includes the Controller, Antenna Drive Unit and it's Mounting Hardware (CM 9554 3-Conductor Control Cable sold separately). 120V 60Hz 45W Rotation 360 degrees +5/-0 with mechanical stop Rotation Time 70 seconds Rotation Torque 220kg/cm (192 lb/in) minimum Mast Size 28-44mm (1.125"-1.75") Vertical Load 45kg (99lb) maximum The Drive Unit has Precision Gears and Thrust Bearing in a Durable Powder Coat Finished, One-Piece Cast Aluminum Body.