The Shocker Dropped Ball Mount attachment with a 2-5/16″ hitch ball features a 1-1/4″ hole for the hitch ball and a 4-1/2″ to? 7-1/2″ drop. Built for heavy duty Tow. The 2-5/16″ hitch ball has a Tow capacity of 16,000 lbs & 1,600 lb tongue weight. It is designed to work with Shocker Air Receiver Hitches and Shocker Solid ball mounts.