50mm Square Head Screwdriver Bits Set SQ1/SQ2/SQ3 Magnetic Four Corners Screw Driver 6.35mm Hex Shank Ratchet Wrench Hand Tools

[Features]: Materials: S2 alloy steel Type of shank: 6.35mm / 0.25 inch hex 1.High quality, made with S2 alloy steel, hardness up to 60HRC. 2.Special heat treatment, super hard wear-resisting, life is twice as long as ordinary screwdriver. 3.It is an ideal industrial screwdriver widely used in industry and household. 4.Magnetic, can absorb screw, operate simple, quick operation. 5.Applicable for electric screwdriver, hand screwdrivers, electric drill, air drills etc. Notes: Please allow a bit manual measuring errors.