The screw extractor, bit set, and screwdriver extractor are made of high-speed steel, offering high hardness and durability to easily remove damaged screws. Magnetic bit holders provide added torque for high torque screwdrivers, while quick change bit holders solve the issue of insufficient bit length for drilling. This versatile tool is suitable for a wide range of drill bits and screws or bolts, including hexagon socket bolts, machine screws, square head bolts, wood screws, and sheet metal screws. For best results, use on an electric hand drill at a low speed and in reverse. The kit includes a variety of sizes to fit your needs, and must be used with care to avoid injury. Elevate your DIY projects with this high-quality screw extractor kit!