Wera Kraftform Plus 352 Ball End Hex Screwdriver Tip size: 3.0mm Blade length: 100mm (4") Overall length: 181mm Designed for professionals Kraftform handle, with hard and soft zones, fits the shape to the hand for the ultimate in comfort and high-speed torque transfer. Anti-roll protection at base of handle stops screwdrivers from rolling away at the workplace. The ball end allows you to access the screw at an angle.