This complete UFP Inner member slide fits into existing outer member housings (for use with hydraulic disc braking systems for dual axles (2) Axles. Includes all internal working parts of the A-75 Hydraulic Brake Actuator. All UFP actuator inner member slides and outer housing assemblies are compatible with one another regardless of bolt-on or weld-on configurations.The A-75 Inner Slide is standard with a 7,500 lb GVWR rating (formerly 6,000 lb rating). Comes complete with electrical reverse solenoid, which allows backing up with out your brakes engaging. This solenoid is covered by a housing for protection against the elements and damage. Standard all aluminum master cylinder for complete corrosion resistance, rubber pushrod boot offers protection against freeze-up, exclusive UFP latching mechanism to ensure that the hitch ball is locked into place, breakaway cable kit included.