Description Description: Premium MaterialThe trailer hitch lock is made of quality aluminum alloy, copper lock core, and the total lock body surface is painted to prevent rust and stand up to any weather FitmentTrailer Lock fit for almost 1-7/8, 2 and 2-5/16 trailer couplers Easy to InstallThis trailer padlock is very easy to install, no need for complicated tools and techniques, just plug in the ball joint and put it in the right position FunctionThis traction hook lock hitch ball lock with the advanced locking mechanism can protect your trailer from being pulled apart by other vehicles ApplicationTrailer Hitch Locks with Keys suitable for various types of trailers, including boat trailers/rv//truck and more. Package Includes: 1 Trailer Lock 2 Keys Note: Please allow slightly errors 1-2cm differences due to manual measurement.