The HOME-FLEX underground 1 in. Pipe Coupler allows you to safely and easily connect two pieces of polyethylene gas piping. Simply slide the lock collar onto the pipe and screw it into the other side of the connection. Repeat the same for the other side. Brand Name: Home-Flex Sub Brand: Underground End 1 Diameter: 1 in. End 1 Type: IPS in. End 2 Diameter: 1 in. End 2 Type: IPS in. Material: Polyethylene Product Type: Transition Adapter Average Lead Content: Less than 0.25 % ANSI Certified: Yes Packaging Type: Bagged NSF Listed: No IAPMO Certified: Yes