These flexible couplings have found wide acceptance among sewer and Plumbing contractors and municipalities because of their quality and ease of installation. These pipe couplings and adapters are used for all types of in-house and sewer connections: drain, waste, vent piping, house-to-main, repairs, cut-ins, conductors, roof drains, and increasers-reducers. FEATURES: - Rubber flex coupling that connects virtually any pipe material - Stainless steel clamps - Leak-proof sealed flexible connectors SPECIFICATIONS: - Double fitting size: 4” x 4” - Conforms to ASTM C1173, CSA B602, Certified and UPC Approved, Rated for underground use