1、High Security: The gooseneck hitch lock provides a high level of security, preventing theft of your trailer and giving you peace of mind, ensuring professional and reliable use. 2、Secure Coupler Latch: Base of trailer coupler is protected with a latch lock that prevents unauthorized access, while the heavy duty bracket ensures a secure fit. 3、Strong Compatibility: The gooseneck hitch lock is compatible with all 2 5/16 inch gooseneck couplers, making it suitable for trailers, RVs, and livestock carriers. 4、Reliable and Robust: Made from high grade metal, this lock is resistant to wear, scratch and shock, high strength and hardness, and is not susceptible to deformation and damage. 5、Easy to Use: Installation and removal are a breeze with our coupler trailer lock. Its simple design allows for quick application and removal, saving you time and effort. Item Type: Trailer Hitch Lock Material: Metal Size: Approx. 11 inches x 6-1/4 inches x 4-1/2 inches (Length, width, height) Pin Diameter: 3/4 inches Fitment: Replacement for All Gooseneck 2 5/16 Couplers Compatibility: Trailers, RVs 1 x Gooseneck Trailer Lock 1 x Pin