23-piece complete set for removing damaged screws includes 10 drill bits Ex#1-#10, 10 extractors Dx#1-#10, 1 dedicated box, 1 magnetic bit extension, and 1 magnetic socket adapter. Magnetic extension rod and adapter: the professional left extractor features a non-slip fine tooth design, plus a magnetic extension rod and adapter (6.35 mm) compatible with any drill brand for easy bit changes and improved work efficiency. High-quality materials: made from robust high-speed steel 4241, offering high hardness and excellent corrosion resistance for lasting durability. Versatile use: designed for removing broken and rusted screws; suitable for almost all screw heads, including cross, Phillips, Torx and hex. Use scenarios: - Repairing a metal chassis where a screw has broken off flush; use the extractors with the magnetic extension for secure alignment and removal. - Removing a rusted screw on outdoor machinery or equipment where standard bits fail. - Extracting stripped screws in furniture or appliances with various head types (cross, Phillips, Torx, hex) without damaging the surrounding material.