This Fafeicy argon regulator is perfect for MIG and TIG welding. It is calibrated for argon, helium, and carbon dioxide gases. It features an external safety pressure relief design and a gauge with clear scales for easy reading. The polycarbonate flow tube and outer cover are impact resistant for maximum durability. Material: alloy and brass. Structure: Single pass type. Nominal output pressure: 0.25 MPa. Gauge range: 0-25MPa. Includes 1 argon CO2 flowmeter regulator in the package.