Features:This CO2 gas mig regulator is designed for professional TIG/MIG welding applications. The output flow is adjustable from 0- to 25 lpm-. And is indicated by a ball which moves up and down in the flow tube. The material of body is full copper. Great for Miller, Lincoln-, Hobart-, HTP-, and most other welders! This flowmeter does not use a diaphragm, so it is more reliable than the flow-gauge style regulators. All the hardware of this flowmeter regulator was tight and passed the leak test.You can easily turn the adjustment knobs by hand. Very easy to use every for time. Specifications:Material: Copper Thread: G5/8 Note:Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.Package includes:1x CO2 Gas Regulator