We started with a 15' RhinoFLEX sewer hose, and at the RV end of the hose, there is a super-tough bayonet fitting with 4 prongs for a more secure fit. At the dump-station end, we’ve added an easily detachable 4-in-1 adapter (White) for fitting to 3" slip or 3", 3-1/2" and 4" threaded pipe. It’s a ready-to-use kit made with the toughest hose you can buy. With new pre-attached swivel fittings featuring a reusable locking ring so that fittings can be moved to a new RhinoFLEX hose. Bayonet cap and elbow cap also included. Patent pending.