38401 hex plus stainless steel bits wera stainless torsion 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 use with wera stainless rapidaptor bit holder application for hexagon socket screws drive 14in hexagon din 3126 c 63 iso 1173tip hex plus simila