The Coilhose K0604DL is a 3/8 x 1/4-Inch FPT Hex Coupling. This Coilhose hex coupling is designed for use with brass, copper or iron pipe. Features: * 3/8 x 1/4-Inch female NPT * Solid brass construction * Connect, adapt or control any air or water line * Designed for use with brass, copper or iron pipe What"s In the Box: * Coilhose K0604DL 3/8 x 1/4-Inch FPT Hex Coupling