Features: 1.Include Details: 5/8in black trailer hitch locking pin and 1/4in coupler lock kit with 3 2in muffler pads and fit for 2in receiver. 2.Performance: Trailer lock is made of premium strength steel and coated with electrophoretic paint, durable and rust proof. Trailer coupler lock with rubber rings can prevent rattle noise and reduce the risk of scratches. 3.Adequate Keys: Equipped with 4 keys, and plenty of spare keys make you don't have to worry about broken or lost keys. 4.Features: The trailer lock set is reliable for long term hauling and is secure for full protection, safely protecting your trailer, boat, camper and so on from theft. 5.Easy Operation: Designed for easy operation, you can easily push to lock it without using key, when you want to open it, just turn the key a little bit and the pin will out by itself. Specification: Item Type: Trailer Hitch Locking Pin Kit Material: Steel and zinc alloy and rubber Surface Treatment: Paint Product Role: Prevent theft Application: Suitable for RV, Truck, Trailer, Engineering Vehicle, Camper Note: Different sets of keys are different