Made in the U.S.A., featuring the SureGrip® hex design, which drives the side of the hex, not the corner. The nose-down design extends the taper as far as possible for improved access over straight wall designs. Improved black coating retains more rust preventative compound than black oxide.SureGrip® Drive Design drives the side of the fastener, not the corner, to provide increased strength and avoid rounding of rusted or damaged fasteners.Corrosive resistantN/A