NSF Lead Free Brass Pex Coupling Material: low lead brass C46500 Size: 3/8''PEX x3/8'' FPT 1/2''PEX x3/8'' FPT 1/2'' PEX x1/2'' FPT 3/4'' PEX x1/2'' FPT 3/4'' PEX x3/4'' FPT 1/2'' PEX x3/4'' FPT 3/4'' PEXx 1'' FPT 1'' PEX x 1'' FPT Surface: Natural color. Working pressure: 16Bar