Japanese style - nitto fitting.Type: Hose Tail PlugThread Size: 1/2" (12mm)Approximate air flow : 12000 L/M (423 CFM) at 140 PSI)Type: Hose Tail PlugThread Size: 3/4" (19mm)Approximate air flow : 12000 L/M (423 CFM) at 140 PSI)Type: Hose Tail PlugThread Size: 1" (25mm)Approximate air flow : 12000 L/M (423 CFM) at 140 PSI)