Make your RV and towed vehicle more secure by keeping them locked up tight with this CURT Rambler tow bar lock set. Like hitch pins, these locks are designed to insert into the connection points for the tow bar, securing the tow bar attachment tab connections and the tow bar shank connection to the RV hitch. CURT hitch locks allow you to lock your dinghy towing setup, deterring theft and tampering with your flat towing connection when you're away from your vehicles. This CURT hitch lock set includes three hitch locks. Each features a barbell design. Two of the locks come with a 1/2-inch pin diameter to fit into the attachment tab connections. The other lock has a 5/8-inch diameter to secure the 2-inch tow bar shank into the receiver. CURT barbell hitch locks are comprised of a pin with two end caps and a round locking mechanism. They are key-operated and activate with a simple 1/4-turn. They also come with a watertight dust cap to keep out the elements and prevent corrosion. All three locks are keyed alike for maximum convenience. Six keys are included.