Feature: 1. Safety: The sturdy stainless steel is waterproof, and the black waterproof and dustproof cap can effectively protect the lock core components from damage. 2. Heavy Duty Construction: High strength hardened structure with chrome plated surface, ensures your trailer and trailer hitch ball mount from theft. 3. High Quality: The plug lock is made of sturdy stainless steel material, which has high strength, sturdy and not easy to bend with long lifespan. 4. Portable: The 5/8 inch diameter plug lock has small size, which is easy to carry and can be applied to trucks, trailers, RVs, cars. 5. Easy Operation: When it rotates 1/4 turn and hear the "click" sound, the device can be locked, which is easy and convenient to install. Specification: Item Type: Trailer Hitch LockMaterial: Stainless SteelSurface: Chrome PlatedLength: Approx. 5/8inFitment: Fits for trailers. Package List: 1 x Trailer Hitch Lock3 x Key