Sturdy and durable construction Made from strength HSS, this screw extractor set offers durability and stable performance for frequent mechanical maintenance and screw removal. 5piece set with 1/4 inch hex shanks Includes 5 screw remover extractors, each with a 1/4 inch (6.35 mm) hexagonal shank to fit standard drill chucks and drivers. A range of sizes is provided to handle different damaged fasteners and tasks. Practical and functional design The extractors have a unique threaded head that enhances grip and reduces operating hassles, improving extraction success rates. Easy to use Designed for beginners and pros alike, the set helps you drill, change bits, and remove damaged screws and bolts in a straightforward process. Use scenarios Automotive maintenance: remove stripped screws from engine bays or panels. Appliance or metal chassis : extract rusted or damaged fasteners. DIY furniture and outdoor equipment: remove corroded or rounded screws during restoration or assembly.