Reese Towpower Interlock Hitch Ball features solid steel construction designed for durability and strength. The interlock balls and ball mounts work together to create a convenient one-wrench tightening system, making installation and removal quick and easy. While these interlock products a streamlined process, they are also compatible with standard hitch balls and ball mounts, which may require two wrenches for tightening. This particular model, 72807, is classified as Class I and has a ball diameter of 1-7/8 inches, a shank diameter of 1 inch, and a shank length of 2 inches. It supports a trailer capacity of up to 2000 pounds and comes with a chrome finish. The package includes one hitch ball and is sold with a hang tag for easy identification. Model Number: 72807