For best use, attach the regulator to the tank before installing the T-handle, open the valve and slowly rotate the T-handle clockwise to adjust the desired pressure This welding regulator is made of brass and has a versatile connection option including 9/16" male thread, 5/8" female thread, and standard 1/4" hose barbs Ideal for welding workshops, industrial supply systems and laboratories where precise control of argon or CO2 pressure is critical to maintain purity and work efficiency The adjustable pressure regulator has an entrance that easily connects to argon and CO2 tanks and incorporates a filtration system that blocks impurities, ensuring purity, and strengthens welding Designed for welding professionals, industrial engineers and crafters who need safe, adjustable pressure adjustment for everyday work and projects, Manufacturer: NUEAYMS