Wera screwdrivers of this safety pattern far exceed the requirements of relevant standards regarding strength & torque stability. Safety guarantee individual testing of the tool for dielectric breakdown strength at 10.000 Volts in a water bath & safe working up to 1000 volts. The handle is of ergonomic design for faster more powerful & less tiring screwdriving action & has anti roll feature. Blade Length, 100 mm. Tip, 3.5 mm. Slip Stop.