Easily Remove Stripped and Rusted Screws - With our dynamic screw extractor set, 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 sturdy, durable and has an excellent hardness of 55HRC.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 5 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.