UPGRADED VERSION - Apart from 20 drill bits and extractors of different sizes. So, the product is compatible with screws/drill bits/bolts of any size, such as square head screws, hex bolts, wood screws, etc. QUALITY MATERIAL - Made of quality 4341 high-speed alloy steel, the tools are solid, durable and have high strength. And damaged screws can be easily removed, making your work more efficient. EASY USE - In just two simple steps, all stuck screws or bolts can be removed in seconds: Choose a drill bit smaller than the damaged screw, and then, use an extractor of the same size and rotate it in the opposite direction to remove the screw. PORTABLE - Comes with a small tool storage box so that the accessories are not easy to lose. In addition, since the case is quite thin and lightweight, it is easy to carry. WARM TIPS - It is highly recommended to use the electric hand drill at low speed to remove damaged screws to avoid injury. Made of Sturdy and Durable Alloy Suitable for high-speed revolution. Easily remove broken or rusty screws. Multiple Size Drills and extractors of different sizes offer multiple choices. A suitable size will make removal much easier. Practical Storage Box ADP, bit holder, each drill and extractor have their slots. Clear organization, compact and lightweight to carry. Delivery Quantity: 1 set (22 pieces) luckymeet