Features 1、Versatile, the stripped screw extractor kit includes 20PCs stripped screw extractor in 10 different sizes, which can satisfy all you demand. 2、Suitable for any sizes screw or bol, screw removal tool keeps high practicality and durability. 3、Easy to remove, the stripped screw extractor set includes two extension drill bit holder. You can remove in one step, do not need to convert the extractor or adjust the chuck. 4、And screw extractor is made of high quality high-speed steel 4341with high hardness, durable, which can easily remove damaged screws. 5、Through many inspections before leaving the factory, screw extractor keeps guaranteed quality, you can use it with confidence. Specification Item Type: Screw extractor Material: High speed steel Drill Bit Model: DR/EX Operation Way: 1.#6-#10 size first need to be installed in the socket adapter, and then attach it to the expansion rack (other sizes can be directly connected to the expansion rack). 2. Use a DR drill to drill a hole in the broken screw. 3. Change to use the same size of extraction (Ex) bits. 4. Use the drill bit upside down and take out the damaged drill bit. Package List 20 x Screw Extractor(Ex#1-#10, DR#1-#10) 1 x Magnetic Extension Position Holder 1 x Socket Adapter