The Rhino sewer hose adapter flexible drain is designed to connect your rv sewer hose to sewer drains with hard-to-reach angles. The attached three-in-one flexible seal is easy to push in and can fit in 3, 3-1/2 or 4 in inlets. It even works with damaged threads for an odor tight connection. The attached pull handle and wings help with easy removal. The Rhino sewer hose adapter flexible drain includes a pre-assembled Rhino extreme hose with a 360 deg swivel bayonet fitting to attach to your sewer hose, a three-in-one seal adapter and a pull handle.