Quick view 3" Heavy Duty No-Hub Coupling Braxton Harris 3" Heavy Duty No-Hub Coupling Manufactured to CISPI Standard 310, ASTM C1540, IAPMO 6034. Gaskets conform to ASTM C564. Includes 4pcs 304 grade stainless steel 9/16″ band and 3/8″ S.S. screws...