FlashShield Corrugated Stainless Steel Tubing (CSST) supplies natural gas or LP gas to appliances. FlashShield is a reliable, lightning-resistant system that can be installed in all modes of construction. Flexibility and no additional bonding means quick and easy installations: FlashShielda® installs 30-70% faster than traditional piping methods.CSST flexible gas piping supplies natural gas or liquefied petroleum gas to appliances.Features:FlashShield Offers All the Benefits of Flexible Gas Piping, with Superior LightningProtection. Only metallically-shielded CSST on the market Only product that meets strict criteria of both LC1024 and LC1027 Highest lightning resistivity Multiple layers of protection Corrosion tested and approved No additional manufacturer bonding required Flexibility and durability allows for simple routing through complex building structures and designs. Pre-marked by the foot for easy measuring and installation. Minimum tubing wall thickness of .010 on all sizes is more robust than other brands of CSST. Annealed 304 stainless steel makes tubing more flexible than brands not heat-treated.