[Feature]: Finish: Black Oxide, Material: Carbon Steel, Size: 1/2", Shank type: Hex Handle, Height: 57mm/2.24 inches, Shank diameter: 6.3mm/0.25inch. [Material]: Made of carbon steel with black oxide smooth finish, long service life and easy to use.. [Function]: When air conditioning is installed, expand copper tube, make two copper tube mutual link.. [Easy To Use]: It needs to be used with power tools such as hand electric drill, saving you time and improving work efficiency.. [Heat by Friction]: The hex handle drill expander for molding tubes using heat by friction way more surface of between the flare and the Valve. Arc design preserve the ductility of copper/aluminum during die forging to leak-tight fitting..
