Features: Made of carbon steel with black oxide smooth finish, long service life and easy to use.When air conditioning is installed, expand copper tube, make two copper tube mutual link.It needs to be used with power tools such as hand electric drill, saving you time and improving work efficiency.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.Specification:Finish: Black OxideMaterial: Carbon SteelColor:BlackSize: 3/8"Shank type: Hex HandleHeight: 52mm/2.05 inchesShank diameter: 6.3mm/1/4"Package Content:2 x Tube Expander Drill.
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