• 1/4" hex drive DIN 3126 and ISO 1173, style C 6.3 • For TORX® head screws • Suitable for wood and soft material applications • High performance alloy steel • Torsion zone that absorbs torque peaks avoiding premature wear and tear and improving service life • Surface coated finish with yellow lack for rust protection • Available in small blister pack of 2 pieces or plastic box of 5 pieces • Extra hard bits are subject to special heating processes that make it harder and reduce the risk of the breakage