Fernco couplings have earned a reputation for consistent, superior performance, giving you full confidence in their quality and reliability. The dimensional flexibility of Fernco couplings ensures leak-proof pipe seals on virtually any pipe material: plastic, cast iron, asbestos cement, clay, concrete, steel, copper and ductile iron. The 3/4 in. x 3/4 in. PVC Flexible Coupling is a high-quality connector designed for use in drain, waste and vent (DWV) applications. The coupling provides fast and easy installation. Connection type is mechanical.Come with 300 series stainless steel clamps.Elastomeric PVC material is strong and flexibleRustproof stainless-steel clamps.Rated for underground use.