Fernco 6 in. x 6 in. flexible PVC Coupling manufactured for Drain, Waste and Vent pipes. This model fits 6 in. ductile iron or asbestos cement pipe to 6 in. cast iron, plastic, steel, copper and lead pipe. It features durable construction that's designed to be unaffected by soil conditions and seals against infiltration and exfiltration. The band slots offer great flexibility and the coupling includes 300-series stainless-steel clamps that are corrosion-resistant. Fernco flexible couplings are backed by over 5 decades of proven experience have earned a reputation for their quality, reliability, and superior performance.