• For TORX® head screws, impact bits • Robust bits for heavy duty applications • Impact bits are suitable for impact drivers • TORX® bits are colored to easy identify the size of the tip • Designed for long-time works, the Torsion zone can effectively spread the strength concentration. It absorbs torque peaks avoiding premature wear and tear and improving service life • High performance alloy steel • Manganese Phosphate finish • 1/4" hexagon drive. DIN 3126, ISO 1173, style E 6.3