Receiver Lock Lock Type Universal For Use With 1 1/4 in and 2 in Receivers Hole Diameter 1/2 in 5/8 in Vehicle Class I II III IV Features 4-Pin Tumbler Mechanism Resists Picking Fits Both 1/2 in and 5/8 in Receivers K1 Key Blank Push to Lock Locking Mechanism- Push Lock Body Onto Pin Firmly and Remove Key Usable Length of Receiver Pin is 3 in Weather Tough Seal and Water Tight Cap Protects Lock From Moisture and Dirt Includes (2) Keys Finish Stainless Steel