Main dimensions marked with an asterisk*, for Torx® screws, with hole at the tip, for screws with and without locking pin, precise, true-to-size tip, optimal fit in the screws, curved handle with a soft surface, pleasant grip and high torque transmission, color code pro Screw type, quick identification, special alloy based on spring steel, exceptional elasticity with high hardness, laser-marked with serial number, lifetime guarantee