APPLY TO ALL DRILLS : 6 pieces screw extractors work with any drill and all the screw size or bolt (3-12mm), These extractor tools are used to reverse the damaged screw counterclockwise until it is released HIGH QUALITY - This damaged screw remover tool kit is made from High-Speed Steel H.S.S 4341# , which have high hardness of 63hrc, it's durable and easily to remove any damaged screws. MODERN TOOL : Keep this set in your toolbox to get the damaged screw out and your project back on track. EASY TO USE: Just two simple steps to get the job done - drill a hole with a cutting size using the right size screw extractor and easily remove the screw or bolt using the removal tool Hardness 63-65HRC: Titanium hardened steel material, more durable than most screw extractors on the market, better hardness and durability than others, buy with confidence and complete peace of mind Super Gift for Woman Man Father Mother Boyfriend Girlfriend - This damaged screw extractor is a beautiful gift for any occasion. Whether it's a birthday, anniversary, Father's Day or any other occasion, your loved one will be delighted to receive this high quality gift