TracPipe® CounterStrike® is a flexible stainless steel piping system used for natural gas and propane installations. CounterStrike® is currently in use for gas piping systems in single and multi-family residential as well as commercial and industrial buildings. The CounterStrike® superior corrugated tubing coupled with AutoSnap® or AutoFlare® fittings combine to make the best CSST product available. The full range of sizes (3/8" to 2") and proven reliability of CounterStrike® make it the first choice at all residential, commercial, and industrial job sites.