Trimax TS32 Universal Receiver Lock - Fits 1/2" and 5/8" with Stainless Steel Sleeve This universal pin fits all Class II, III, IV and V receiver hitches O-ring keeps water, grime and dirt out of locking mechanism to ensure years of use Protective rubber cap protects keyhole from water, grime and dirt Protective rubber cap protects keyhole from water, grime and dirt Includes 2 keys