This 25-piece screw extractor set is great for removing damaged studs, screws, Alemite fittings, etc. This professional tool set is ideal for commercial or occasional use. Made of high-quality steel, this extractor set is strong and durable. Its innovative spiral profile eats into the screw head and allows a secure release of the drive profile that is no longer to be actuated. The complete screw extractor set is delivered in a sturdy case for easy storage and transportation. Delivery includes 25 screw extractors.