The Valterra Clear View RV Sewer Drain Adapter is easy to use, helping to make your sewer interaction as fast and as painless as possible. This is the Clear View 90 Degree Bayonet Sewer Fitting, model #T1023. The 90 degree design reduces stress on your sewer hose. This unit has an easy bayonet attachment made for use with current drain hose fittings, and there is no need to remove or re-attach the drain hose. Plus, because it is clear, it helps you see when the tank is clean.