... 1.lightweight,economicPolypropylene (PP) quick release camlock couplingsTypeDescriptionSizeMaterialThreadA type male adapter x female thread1/2" ~ 8"Polypropylene,Nylon,Aluminum,Brass ... ~ 8"Polypropylene,Nylon,Aluminum,Brass,Stainless steelBSPP,BSPT,NPTF typemale adapter x male thread1/2" ~ 8"Polypropylene,Nylon,Aluminum,Brass ... ,Bauers,clampsPP Male Part B Polypropylene camlock male threaded coupling