GEDORE vanadium steel 59CrV4, chromated, GEDORE vanadium steel 61CrSiV5, zinc-plated, Chamfered nose ends facilitate insertion into the screw head, Chrome vanadium steel 59CrV4, chrome-plated, Professionally tempered, for long service life, Uninterrupted fibre flow of the steel - full strength, toughness and elasticity, In blue plastic insert holder (LDPE)