Energy-efficient 191-manometer gauge Designed to optimize gas use, the 191 gauge effectively measures gas pressure and minimizes waste, making it suitable for welding needs. CGA580 inlet thread for secure connection The CGA580 inlet thread provides a safe, reliable connection to your gas cylinder, improving safety and efficiency during operation. Precise pressure measurement Boasting a brass exterior and appropriate pressure range, the 191 gauge delivers accurate readings for optimal welding conditions on various projects. Practical 8 mm outlet nozzle The 8 mm outlet nozzle allows easy attachment to hoses and other equipment, enabling seamless gas flow for efficient welding processes. 2-3 use scenarios - In a welding shop for MIG/TIG welding, ensuring stable gas pressure and reduced waste. - On a job site for portable metal fabrication, connecting quickly to cylinders with a secure CGA580 fit. - For hobbyist or small workshop projects requiring reliable pressure readings and easy hose attachment for smooth gas delivery.