High quality kraftform plus vde screwdriver set made of stainless steel die wera stainless tools are vacuum ice hardened and have a hardness and strength needed for screw connections there are no limitations to the industrial applications they are suitable for wera vde tools are tested individually in a water bath at 10 000 volts to guarantee the safe working at their maximum permitted load of 1 000 volts predominantly with lasertip this micro rough drive tip bites into the fastener to ensu