... Nipple bsp1/4"M, 2,Material Brass Specifications1,Size:Germany Tpe Nipple bsp1/4"M, 2,Material BrassFeatures:A: size: ... couplerH: Material type :Steel , Zinc Alloy ,aluminium ,BrassWe have many coupler could suit for this plug:1,Universal coupler2,Germany Type Coupler Brass ...