Amflo CP90 Steel HI-FLO Air Line Coupler Plug ('V-Style' X 1/4" Female NPT) Amflo Steel, HI-FLO, 'V-Style' Air Line Coupler Plugs are specifically designed for HVLP situations, such as paint spray guns, abrasive blast cabinets, and high CFM air tools V-Style' coupler plugs can be identified by the 2 ribs separated by a wide band in front of the ball groove and large diameter passage in the plug Heat treated, cast and machined, plated steel construction offers high strength, durability, and corrosion resistance 300 PSI max pressure V-Style' X 1/4 inch female NPT