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 3-in-1 flexible seal is easy to push in and can for in 3, 3-1/2 Inch or 4-inch 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 features a pre-assembled Rhino Extreme hose with a 360-degree swivel bayonet fitting to attach to your sewer hose, a 3-in-1 seal adapter and a pull handle.