60-150mm hexagonal quick-release self-locking extension rod electric drill driver quick transfer rod screwdriver tool set

Length: 60mm, 100mm, 150mm.Energy-saving accessories for electric hand drillMaterial: CR-V (chrome-vanadium steel)The diagonal diameter of the hexagonal shank is 1/4 inch, or 6.35 mm. Features: The interface has a locking mechanism.It is suitable for the transfer of electric drill, screwdriver, pneumatic screwdriver, etc., to extend the conversion of various screwdriver heads and screwdriver heads; Fast and tight; Greatly improve work efficiency.Special reminder: this extension rod can only be installed with single-head screwdriver, but not with double-head screwdriver!!!It can be used for the transfer and quick change of imported and domestic 1/4 electric screwdriver, manual electric screwdriver, electric drill screwdriver and other tools.