RV sewer hose with built-in clamps allows you to use standard inexpensive fittings. Improved clamping action keeps fittings securely in place. No longer have the hassles connected with ordinary sewer hoses: fittings slip on easily and clamp securely. Designed for quick and simple hookup with all types of sewer hose adapters. Join as many hoses as needed with just a standard internal hose coupler.