Features: The Alloy Drillbit efficiently removes stripping screws with its do stage systems creates precise guide holes, while the reverse thread extraction bit grips and rotates damaged screws counterclockwise for effortless removal. Crafted from hard alloy, this corrosions resistant drillbit features a standard 2.35mm shank for rotary tools and polishing pens, ensuring durability across repeated uses without blunting or breaking. Ideal for DIYer enthusiasts, mechanics, and repair professional seeking reliabled stripping screw solution in workshops, automotive maintenance, or home improvement projects. Tackle seized fasteners on furniture, electronics, or machinery by first drilling guide holes, then applying reverse rotation pressure using the extraction bit for smooth screw removal. Compact and lightweight at 14g, this portable toolkit delivers professional results even for beginners through its two step process, making it essential for precise repair tasks requiring stripping screw removal tools. Specifications: Name: Drill bit polishing head Extractor length: 45mm/50mm Staining head diameter: 2.35mm Suitable for: Slides of mobile phone laptops Styles: A/B/C/D Component:Alloy Steel Package Includes: 1pcs Drill Bit note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.