TITAN / DICO Model 60 Lever Lock Disc Actuator with Solenoid and Cover 7,000 lb Surge brake actuator for disc brakes Bolts to 3" trailer frame - 7,000 lb gross trailer weight rating / 700 lb tongue weight rating Includes breakaway device Model 60 surge brake actuator is equipped with a lever-lock coupler to fit 2" hitch balls. Coupler can be adjusted to fit 1-7/8", or 50mm hitch balls by tightening the coupler's locknut Read product description below for more information