7,000 lb. G.V.W.R. Disc Brake Actuator with Blocking Solenoid Kit. 1/2" x 4 1/2" grade 5 bolts are required in mounting of straight actuators. 600 lb. maximum tongue load. Limited to coupler rating. Plated actuator may be used in a marine application. Plated, top mount, lever lock coupler. 2" ball 3" channel.