This Sioux Chief PDQ? Push-fit gas water heater installation kit containes all parts needed for installation, including braided stainless steel push-fit supply lines, stainless steel gas supply line, and thread sealant. The lead free water supply lines are comprised of a core of extruded PVC tubing. The core is over-braided with polyester yarn, another layer of PVC is added and finally wrapped in braided stainless steel. This provides a strong yet flexible supply line. This product has a push-fit connection and is easy to install on Copper, PEX and CPVC pipes.