Harris HP 721C Specialty Gas Regulator - CO2 721C015320A filter_Consumable_Size 5 It is most commonly used

It is most commonly used when AC TIG welding aluminum or magnesium

Genuine Lincoln® MIG Gun Liner for feeding

and the laser etched size markings with black ink fill improve visibility

Abrasive resistance - Mild

AirForce 700i plasma cutter

Harris HP 721C Specialty Gas Regulator - CO2 721C015320A filter_Consumable_Size 5 It is most commonly usedHarris HP 721C Specialty Gas Regulator CO2 (Carbon Dioxide) with Chrome Needle Valve Outlet 721C015320A The Harris HP 721C 015 320 A specialty gas regulator is a single stage, chrome plated brass, high purity regulator with CGA 320 (Carbon Dioxide) inlet and chrome needle valve outlet. It features a 316L stainless steel diaphragm and a one piece encapsulated seat with sintered filter to prevent contamination. The HP 721C is recommended for gas purity