CURT hitch adapters and extenders are easy to use and help provide level towing for your trailer. This receiver hitch adapter is designed to fit a 2-inch x 2-inch receiver tube opening. It not only extends the receiver but also provides 4 inches of drop or 4 inches of rise. It is great for adjusting the height of a ball mount, bike rack or other hitch accessorie s. It has a max weight capacity of 7,500 lbs. This raised hitch adapter extension is also ideal for dinghy towing, allowing you to level your tow bar with the vehicle base plates. CURT hitch adapters are crafted to be durable and dependable. This drop down hitch adapter features a strong steel construction, precise welding and a durable black powder coat finish for lasting resistance against rust, chipping and UV damage.