The Trimax TAR300 locking receiver with an anti-rattle pin and features a chrome finish and hardened steel. Provides instant security for your camper boat or trailer by securing your vehicle receiver hitch. Features patented quarter turn technology that cannot be false locked. The TAR300 is a 1/2 pin and includes a removable 5/8 pin fits Class III and IV receiver hitches. O-Ring seal and water tight cap help seal out dirt and corrosion to ensure years of use. Fits a 2 3/4 span.