CURT Trailer Hitch Adapter, 2-Inch Receiver, 2-In Drop or Rise, 7,500 lbs Model 45797CURT Trailer Hitch Adapter, 2 Inch Receiver, 2 In Drop or Rise, 7,500 lbs Model 45797 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 2 inches of drop or 2 inches of rise. It is great for adjusting the height of a ball mount, bike rack or other hitch accessories. It