All Super 5th hitches feature PullRiteUs unique gear driven rotary latch, with an automatic locking mechanism, for a safer, tighter connection between the truck and trailer. WouldnUt you rather have a tighter latch, that locks automatically, and tows more comfortably? All Super 5thUs have a double pivot, fully articulating head. The rotary latch wraps 140! around the king pin, reducing wear, and minimizing "bump" while towing, allowing only .030" tolerance between king pin and latch. The 16K and 20.5K Super 5th hitches have a plate height that is adjustable from 14" to 17". (16,000 lb. model - 4,000 lb. pin weight capacity. The 20,500 model - 5,125 lb. pin weight capacity). Choose Universal Mounting Kit - or new custom designed for specific vehicle SuperBracket Mounting Kits for a stronger, more stable towing platform, and easier installation, or the SuperRail Mounting Kit with totally removable base rails and custom designed mounting brackets.