Wera 05031582002 Kraftform Comfort VDE 1160i Slotted Insulated Screwdriver, 3.5mm Head, 100mm Blade Length Features hexagon blades for Slotted drive tip, 3.5mm x 100mm shaft Each screwdriver is tested at 10,000 volts in a water bath to guarantee safe working standards of 1000 Volts Wera Black Point Tip and hardening process guarantee long service life, increased corrosion protection and accurate fit into fastener Multi-component Kraftform handle fits the shape to the hand for quick and effortless working Limited Lifetime Warranty, German Engineered