NEW ARRIVAL ⚡⚡⚡ Werkzeug change the traditional ideas and devoted to studying professional broken bolt extractor ✅ High-Speed Steel 4341 ✅ Suitable for general sizes and all kinds of broken bits ✅ Universal chuck that suitable for most electric hand drills ✅ Remove broken screw in one step(Do not need to conversion the extractor or adjust the chuck) How to Use the Screw Extractor? 1. The size of #6 - #10 needs to be installed in the socket adapter first, and then attach it to the extension bit holder (The other sizes can be attached to the extension bit holder directly) 2. Use the drill(Dr) bit to drill a hole in broken screws 3. Change to use the extract(Ex) bit with the same size 4. Reverse use the drill and take out the broken bit Warm Tips : - Must drill a hole first when the break screw surface is smooth. Otherwise the drill bit will slip - Must be vertical and low speed when drilling, reverse use this bit, drill the first hole deeper will easier to take out - It is best to use electric hand drill, can not be used the hammer drill mode! Must be low speed during use! Package Included: 20*Werkzeug damaged screw extractor(Ex#1 - #10, Dr#1 - #10) 1*Magnetic Extension Bit Holder 1*Socket Adapter Werkzeug - Your Professional Tool House We are committed to providing the best quality products, and largely dependent on product feedback from wonderful customers such as yourself. ✦✦✦If you have any questions or concerns about our product, please do not hesitate to contact us, we always here to service you.