The Easy-Slip elbow connects your RV's sewer hose to a dump station. The elbow's tapered end accepts all 3" hoses and slip-over fittings. Adapter fits into 3" slip or 3", 3-1/2", and 4" threaded pipe. Larger inside diameter allows for faster dumping. Components separate for storage in bumper. Adapter fits into 3"", 3-1/2"", & 4"" pipe Components separate for easy storage | Camco Easy Slip 4-in-1 Sewer Adapter with Elbow