Compatible with CGA-580 tanks: Easily attach this Gas Pressure Regulator/Flowmeter to your Argon, Helium, and CO2 tanks with its CGA-580 inlet connector Multiple Outlet Connectors: Will fit both the female 9/16" x 18 nut or the male 5/8" x 18 fitting. It also comes with a standard 1/4" barbed fitting WELL-MADE: Accurate Gas Flow Gague, Adjustable from 10 to 60 cfh (cubic feet per hour)-indicated by a ball which moves up and down in the flow tube; Constructed from high quality brass to withstand harsh environments Package Includes:1 x Argon Regulator, 1 x Hose Clamp and Mounting Nut. RX WELD has more complete accessories so you can use it with confidence Designed and perfect for MIG and TIG welding applications. Our Flowmeter is an economical alternative for the demanding customer who requires more accurate gas metering If you have any questions about the parcel you received, please feel free to contact us! We will get back to you within 24 hours, Manufacturer: RX WELDER