UPGRADE - In addition to 20 different sizes of drills and extractors. So the product is compatible with screws/drills/bolts of all sizes, such as square screws, hex bolts, wood screws, etc. QUALITY MATERIAL - Made of high-quality 4341 high-speed alloy steel, the tools are strong, durable, and have high strength. And damaged screws can be easily removed, making your work more efficient. EASY TO USE - In just two simple steps, any stuck screws or bolts can be removed in seconds: Choose a drill bit smaller than the damaged screw, then use an extractor of the same size and rotate it in the opposite direction to remove the screw. PORTABLE - Comes with a small storage box for the tools so that the accessories are not easily lost. In addition, since the case is quite thin and light, it is easy to carry. WARM TIPS - It is highly recommended to use the electric hand drill at low speed to remove the damaged screws to avoid damage.< /p>