• 1/4" hex drive DIN 3126 and ISO 1173, style C 6.3 • For Phillips head screws • Recommended for tasks requiring reduction of the cam-out effect, avoiding the erosion of the bit-screws • High performance alloy steel • Torsion zone that absorbs torque peaks avoiding premature wear and tear and improving service life • Surface coated finish with clear lacquer for rust protection • Available in blister card of 2 pieces and plastic box of 10 pieces