1/2" male national pipe thread. With air flow of up to 99 SCFM, G style plugs are perfect for applications that require more than 60 SCFM. Air flow of 99 standard cubic feet per minute.
Milton Industries 1/4" Male Body A-Style
Milton Industries 1/2" Male Body G-Style
Milton Industries 621-11 Re-usable Brass Fitting Male End 3/8" Hose I.d. 5 Pack
1/2" Male End, 1/2" ID Hose Milton Industries 1704-8
Milton Industries 1/4" Male Plug G-Style
Milton Industries 3/8" Male Body M-Style