Features: (WILL NOT FIT AIRSTREAM TRAILERS) UNIVERSAL TRAILER LOCKS: Universal for any ball size: 1-7/8″, 2″, 2-5/16″ or ring/pin type HIGH QUALITY: Constructed of 3/8″ plate steel and 1″ solid steel shaft. Plated and powder coated finish. KEEP YOUR STUFF SAFE: Provide maximum security for your trailers. For most enclosed, flatbed, landscape, boat, car and utility trailers on the market today EASY INSTALLATION: Easy to follow instructions to provide maximum security for your trailer or storage container. Installation: For any size ring hitch Includes: Mounting hardware, pin, spare key