Sturdy and durable Made from strength HSS material, this damaged screw extractor set is designed for long lasting use. It delivers reliable stiffness and stable performance during frequent mechanical maintenance, making screw removal easier and more efficient. Fivepiece set with 1/4 inch hex shanks (6.35 mm) This 5piece damaged screw extractor set provides a choice of sizes to tackle a range of removal tasks. The hex shanks are 1/4 inch (6.35 mm), compatible with standard drill chucks and drivers for versatile use in different applications. Threaded head design for better grip The threaded head design enhances grip on damaged screws, improving extraction success and reducing operating hassles. This helps you remove stubborn fasteners more reliably. Easy to use Designed to be user friendly for stripped and rusted screws. Beginners can drill, switch to the extractor, and remove damaged screws with ease, making screw extraction a straightforward process. Practical use scenarios Woodworking and cabinetry: remove damaged fasteners from furniture assembly or work. Automotive and machinery: extract seized screws from engine components, brackets, or mounting points. Home maintenance and metal fixtures: remove corroded screws in appliances, doors, frames, or metal hardware.