"Long box application. 21,000 lb. towing capacity. Double pivot head with polyurethane bumpers help eliminate side to side movement when uncoupled and cushion pivot action when coupled. Unique jaw adjustment bolt reduces noise and play between king pin and hitch. 3/4"" solid steel, positive locking slide bar for easy and secure hook-up. Four vertical height adjustments to help you level the truck and trailer to provide a safe and smooth towing experience. Multiple upgrades available to change with your towing needs (see additional information). 5 year warranty, Made in America."