SpecificationsFire hose fitting 1.Made of aluminum 2.Many sizes avaiable:1"1-1/2"2"2-1/2"3"4" 3.Packing by carton 4.Brand name:Jianye Storz Coupling(Fire hose fittings)Storz Coupling(Spool Adapters,Website:://.lifestylecasting.com,fire hose coupling)Standard:DIN standardSizes:1" to 4"Parts:Hose tailFemale adaptorMale adaptorReducers(Swivel)Reducers(Fixed)Blank cap