190AR1-50 light duty flow gauge regulators are designed for light duty MIG applications to provide accurate regulation of gas flow, and reliable performance in commercial, industrial and laboratory applications. 2" flow gauge for easy reading. Body machined from class "A" brass. Chrome-plated housing cap. Internal pressure relief design. Sintered bronze inlet filter. Plastic adjustment knob for smooth "easy touch" flow settings. 0-50 SCFH argon (Ar) flow. UL listed.