Brass Compression Tube Fitting, 5/16″ OD X 5/16″ OD Compression Union Connector(
SIZE – 5/16″ Tube OD x 5/16″ Tube OD, Compression Tube Fitting mainly consists of a fitting body with a 24 degree tapered hole, a ferrule with a sharp inner edge, and a nut for compression. Style OD x OD.