CounterStrike® CSST tubing coil gas piping system used for natural gas or propane powered appliances. The smaller coils are perfect for smaller jobs involving the replacement or relocation of a single gas appliance. Features a single robust protective jacket over a non-annealed CSST, which offers enhanced crush resistance. The superior crush resistance of CounterStrike CSST means that it lays straighter, is simpler to cut and pulls easier in new home construction.