5 Piece Damaged Screw Extractor Set, EONLION Damaged Screw and Bolt Exctractor Set, Easily Remove Stripped Or Damaged Screws. Made from H.S.S. 4341#, the Hardness is 62-63hrc (YELLOW) [WARRANTY] Our Damaged Screw Extractors are backed by a Limited Lifetime warranty. [ADAPTABLE] Our 5 piece damaged screw extractor can be used on any drill and any screw size and bolt. [APPLICATION] Easy removal of screws, great for broken, stripped, stuck or damaged screw removal. Perfect for all homeowners, mechanics, woodworkers, artists, hobbyists etc [DURABLE] Highest quality, have a higher hardness of 63-65 hrc, superior abrasion resistance. promising you a long lasting screw extractor tool and outstanding performance. [EASY TO USE] Use a suitable size remover to drill a deep hole in the screw head and then reverse the screwdriver counterclockwise into the damaged screw until it is released