Fire Hose Adapter, Fitting Connection Type NPT x NH, Fitting Gender Male x Male, Fitting Material Brass x Brass, Fitting Movement Rigid, Fitting Shape Straight, Fitting Size 4 in x 4 in, Tightening Method Hex, Compatible Pipe Size 4 in, Hose Fitting A Connection Type NPT, Hose Fitting A Gender Male, Hose Fitting A Size 4 in, Hose Fitting B Connection Type NH, Hose Fitting B Gender Male, Hose Fitting B Size 4 in, Thread Type NPT x NH