Fully insulated up to 1000 V AC 1500 V DC according to IECEN 60900, for Torx® screws, VDE tested, safe working up to 1000 volts AC or 1500 volts DC, precise, true-to-size tips, optimal fit in the screws, curved handle with a soft surface, comfortable grip and high torque transmission, color code for each type of screw, quick identification, special alloy based on spring steel, exceptional elasticity with high hardness