Whether in the workshop your home or at work youll always have the correct safety and special bit inserts you require comes in a handy metal case this non slip safety bit set set is the solution for all screwing problems whether you are working manually or in hard machining applications the special and safety bits have been manufactured in high quality s2 steel chrome siliconmanganese molybdenum vanadium steel and are suitable for manual operations as well as for machining operations