For your safety, each screwdriver is individually tested at 10,000 Volts for 10 second VDE approved, at the end of the manufacturing cycle. In-line heat treatment: + 100% life and + 100% resistance. Handle material: soft grip for comfort and always resistant to chemicals. "Tri-cotinga" treatment of the blade (zinc-nickel-chrome): 4 times more corrosion resistance. Optimised handle ergonomics: + 10% torque. Laser marking: for better wear resistance. CNC machining of indentations: better screw fit by increasing torque transfer and reducing wear. Countersunk blade: -> 5.5 mm included. Standards: NF ISO 2380-1, NF ISO 2380-2, NF EN 60900, ISO 2380-1, ISO 2380-2, EN 60900, DIN ISO 2380-1, DIN ISO 2380-2, DIN EN 60900ASME B107.600. A: 3.5 mm. D: 25 mm. E: 0.6 mm. L: 179 mm. L1: 75 mm. L2: 104 mm. L3: 18 mm.