Male Plug Material : Brass Specification : 1/4 , 3/8 , 1/2 , 1" , 11/4" , 11/2" and other specifications Male Plug Material : Brass Specification : 1/4 , 3/8 , 1/2 , 1" , 11/4" , 11/2" and other specifications, also custom's requirement is availableWelcome to contact with us. Male Plug