High quality kraftform plus screwdriver set made of stainless steel wera stainless steel tools are vacuum ice hardened and have the hardness and strength needed for screw connections avoids extraneous rust partially with lasertip this micro rough drive tip bites into the fastener to ensure a perfect fit and reduce cam out effect the multi component kraftform handle fits the shape to the hand for the ultimate in comfort and high speed torque transfer the non roll feature prevents any rollin