Wera stainless torsion phillips bits prevent rust on stainless steel fixings caused by contamination from conventional steel tools vacuum ice hardened to the same strength as conventional steel tools and so suitable for tough industrial use wera stainless bits feature a unique torsion zone extending bit life over standard bits application suitable for phillips screws14in hexagon drive din 3126 c 63 iso 1173tip din 5260 iso 8764 stainless steel inox