Reese Towpower Interlock Hitch Draw Bar a convenient and efficient towing solution with its unique InterLock system, which allows for a one-wrench tightening process when used with InterLock balls and ball mounts. Unlike standard hitch balls and ball mounts that require two wrenches for installation, this product simplifies the setup, saving time and effort. The ball mount measures 7 inches in length from the center of the ball hole to the center of the pin hole, with a drop of 2-1/2 inches and a rise of 2 inches, making it versatile for various towing needs. Designed as a Class II hitch, it features a 1-1/4 inch receiver opening and a 3/4 inch hitch ball hole size. The draw bar supports a tongue capacity of 300 pounds and a trailer capacity of 3,500 pounds, ensuring reliable performance for medium-duty towing. Finished with a durable black power-coated surface, this hitch draw bar is built to withstand the elements and provide long-lasting use. Model Number: 21900