Complete with accessories: The kit includes a screw extractor drill bit for removing damaged, stripped, or broken screws of all common sizes. The screw extractor set works with any drill and any size screw or bolt. Improved design: The damaged screw removal tool kit improves on the traditional design with a total of 5 drill bit sizes and titanium plating. This titanium-plated screw extractor and remover set is made of HSS 4341# high-speed steel, which has a high hardness of 63HRC, it is durable and easy to remove all damaged screws. Titanium coating: Each drill bit has a hard titanium coating that increases the hardness of each drill bit, helping them penetrate hard metals, stay sharp longer, and prevent rust and corrosion. Easy to do: Set your drill to counter-clockwise/reverse and use a lower drill speed. Use a polished drill bit/tip to start extracting and drill to create a clean hole. Switch the drill bit to the extractor tip and apply constant downward pressure (and low speed) to \"bite\" the extractor tip into the damaged screw.