brass pressinequal double coupling for pex-al-pex&pert-al-pert,high quality brass materia l(hpb58-3) and competitive price brass press inequal double coupling for the pex-al-pex&pert-al-pert ,made of brass body ,EDPM seal rings,stainless steel and plastic ring.brass body material can be CB617N,HPB59-1, HPB-58-3, brass body superfical treatment be-plating and nickle-plating, high quality , ...