Fireplace Glass San Diego 18" Round Stainless Steel Fire Pit Gas Burner Ring Kit with Elbow 304 Stainless steel for long duration 1/2" pipe connection (gas intake) Recommended for gas fire pits Complete connector kit included. Natural gas recommended. Seek a professional if using LP propane. 18" Flex Line with 1/2" fittings, SS 1/2" Close Nipple, and 1/2" Street Elbow, On/Off Valve