We started with a 15' Rhino Flex sewer hose and pre-attached specially engineered fittings to make convenient. 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 have added an easily detachable 4-in-1 adapter for fitting to 3" slip or 3", 3-1/2" and 4" threaded pipe. Ready-to-use kit has new pre-attached swivel fittings with a re-useable locking ring so that fittings can be moved to a new Rhino Flex hose. Lug cap and elbow cap also included.