Wera Kraftform Big Pack 100 VDE, 14 pieces14 piece screwdriver set with individually tested, insulated screwdrivers as per IEC 60900. Individual testing at 10,000 volts so as to ensure safe working at the permitted voltage of 1,000 volts. Kraftform Plus handle for pleasant, ergonomic working that prevents blisters and calluses. Hard gripping zones for high working speeds whereas soft zones ensure high torque transfer. Partially Lasertip: the tip literally bites into the head of the screw and