... Nylon,Aluminum,Brass,Stainless steelBSPP,BSPT,NPTB type female coupler x male thread1/2" ~ 8"Polypropylene,Nylon,Aluminum ... ,Brass,Stainless steelBSPP,BSPT,NPTC typefemale coupler x hose shank1/2" ~ 8"Polypropylene,Nylon,Aluminum, ... Brass,Stainless steelBSPP,BSPT,NPTD typefemale coupler x female thread1/2" ~ 8"Polypropylene,Nylon,Aluminum, ...