... :1.lightweight,economicPolypropylene (PP) quick release camlock couplingsTypeDescriptionSizeMaterialThreadA type male adapter x female thread1/2" ~ 8"Polypropylene ... ,Nylon,Aluminum,Brass,Stainless steelBSPP,BSPT,NPTB type female coupler x male thread1/2" ~ 8"Polypropylene ... symmetricque Coupling,Bauers,clampsPP Male Part B Polypropylene female camlock coupler with lock levers