Series 7400 VDE Kraftform adjustable torque handle. 3 Variations (0.3-3.5 Nm)Wera Series 7400 VDE Kraftform Adjustable Torque Screwdriver Handle. This VDE adjustable torque screwdriver handle has been individually tested at 10,000 volts to ensure safe working up to 1,000 volts in accordance with IEC 60900. The adjustable Kraftform handle has been designed to fit perfectly into the hand to allow for a fast, comfortable and ergonomic screwdriving experience. The handles hard zones glide like wheels across the hand for high