... NPTB type female coupler x male thread1/2" ~ 8"Polypropylene,Nylon,Aluminum,Brass,Stainless steelBSPP,BSPT,NPTC typefemale ... " ~ 8"Polypropylene,Nylon,Aluminum,Brass,Stainless steelBSPP,BSPT,NPTF typemale adapter x male thread1/2" ~ 8"Polypropylene, ... Tanker Products,Brass pipe fitting&Fire Hose Adaptors,DSP symmetricque Coupling,Bauers,clampsPP Male Part B Polypropylene camlock male threaded coupling