Fire Pit Ring 18" Double Stainless Steel Burner Kit with Whistle Free Connector and Elbow 304 Stainless steel 1/2" NPT pipe connection Recommended for natural gas fire pits 18" Whistle Free 1/2" OD Flex Line , Stainless Steel 1/2" Close Nipple,1/2" Street Elbow 1/2" Brass Valve with Chrome Cover and 4" Chrome Key