The wera kraftform plus lasertip 1000 volt vde electricians stainless steel screwdriver set is suitable for use with stainless steel screws the use of stainless tools with stainless steel fasteners prevents the cross contamination of metal preventing rust from a galvanic process anti slip lasertips significantly reduce the required screwdriving effort and prevent slipping from the screw head the screwdrivers are vacuum ice hardened for industrial strength their correctly designed multi component