Extremely durable corrugated copper construction Built in dielectric sleeves negates the need for a separate dielectric union Easily adapts to water heaters with standard male pipe threads IAPMO certified 3/4 in. size Home-Flex 3/4 in. MIP x 3/4 in. FIP x 12 in. L Copper Corrugated Water Connector is designed for use in residential and commercial applications for water heater hookups. It is flexible, corrosion resistant and has attached end fittings with built-in dielectric collars. It is the ideal choice for homeowners and contractors alike.