Fairly Odd Treasures Heavy Duty C-Lock Locking 5/8" Inch Swivel Head Receiver Hitch Pin Lock for Class III, IV, V, Chrome Lock can fit up to a 3-1/2" wide receiver with a 5/8" hole Eliminate the need for excess keys with this keyed alike Receiver Lock, buy as many as you desire and ALL locks will have the same keys Rotating/Swiveling head allows lock to be rotated 360 degrees to allow for easy insertion of key Strong & Durable Steel Receiver Lock fits Class II, IV, and V receiver hitches Rubber Cap keeps water, grime, and dirt away from locking mechanism