Detailed Product Description Detailed Product Description Photo1:Coupler with aluminum socketSize:1/4",3/8",1/2"Photo 1or 2Japan Type Quick CouplerUSA type air quick couplingEurope Type Quick Coupler Shape:SH.SM.SP.SM.PH.PM.PF.PP(Female,male,hose barb,plug)Material:steel or brassSize:4x6,5x8,6.5x10,8x12Treatment:Nickle plated,Satin platedApplication:Pneumatic tool hose,Connection,Air Pressure, ...