Western Enterprises part number P-CO-3. This ridgid copper pigtail for CO2 gas has (2) female right hand thread CGA 320 brass connections. The tubing is 5/16" x .065 wall copper. The pigtail is most often used in manifolds but could potentially be used to refill a small CO2 tank from a larger one. This item is new but has a small dent in one of the brass connector nuts as shown in the photo.
