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