BulletProof Hitches are manufactured to a very tight tolerance of +/- .010 of an inch. Unfortunately, hitch receivers cannot always live up to these standards. Tolerances can vary as much as .100 of an inch and could cause some unwanted movement or rattle in the hitch. The BulletProof 3″ Anti-Rattle Clamp allows you to tighten the hitch to the receiver and eliminate all movement. It is made from 1/2″ thick pressed brake steel and features the same black textured powder coat as all BulletProof Hitches and accessories. Installation is simple – just slide the hitch through the clamp, insert the hitch into the receiver, tighten the bolt and then tighten the jam nut with a wrench to eliminate movement inside the receiver. *Torque specification on the bolt is 40-ft lbs. *Note: Anti-Rattle Clamp is NOT compatible with weight distribution systems.