Easily Remove Stripped and Rusted Screws - With our dynamic set of extractor drill bits, removing stripped, painted, rusted or rounded screws and bolts has never been easier or more effective! High Quality HSS - This screw extractor set is made of high speed alloy steel (HSS 4341), which is strong, durable and has an excellent hardness of 63-65 HRC. Ease of Use - Use a drill to drill a deep hole in the screw head, then turn the screw extractor counterclockwise on the damaged screw. Finally, remove the damaged screws. It is more convenient than a double-sided screwdriver, no need to switch up and down. Package Includes - You will receive 6 pieces stripped screw extractors in 5 different sizes, packed in a black storage box. Wide Application - The screw extractor kit is for tools that require the removal of screws, including bolts in wallboard, wood and sheet metal applications. Suitable for most common drill bits and screws or bolts of any size. 5 Pieces Screw Extractor Kit HSS 4341 #0 HSS 4341 #1 HSS 4341 #2 HSS 4341 #2 HSS 4341 #3 HSS 4341 #4 The speed and direction of the drill can be changed. Damaged screws can be easily removed and removed by rotating counterclockwise. Easy to remove rust, damage the screw, don't worry. Essential Tools The stripped and damaged screw extractor kit is an essential tool for any craftsman, DIYer, auto mechanic or automotive, contractor, carpenter, joiner or anyone else who USES screws, bolts and nuts on a regular basis. Improve Work Efficiency Tap drill bits increase working efficiency by allowing drilling and tapping in a single pass. These HSS drill bits and taps are excellent tools used to create screw threads, to cut or form the female part of the mating pair. They are used on a machine to do the tapping, such as a lathe. Save Time Broken or stripped screws stop projects. Anyone who does DIY eventually encounters this problem, so having a screw extractor saves you a lot of time! Machine tapping with these taps is faster and usually more accurate because human error is eliminated. Instructions for use: 1. Need an electric hand drill. 2.First remove the drill and make a hole in the damaged screw, the speed should not be too fast. The deeper the hole, the higher the success rate (counterclockwise rotation). 3. Drill a deep hole in the screw head with a drill, and then turn the screwdriver counterclockwise until the screw is broken until it is released.