Materials: Crafted from high hardness steel and industrial grade HSS materials, this Bolt Extractor set offers exceptional durability. The reverses spiral groove design ensures a firm grip for maximum extraction power, making it ideal for removing broken studs, bolts, and hex screwsComprehensive 49 Pcs Set: This versatile kit includes 13 nut removers, a 3/8 inch hex adapter, 16 left hand drill bit, 13 multi splines screw extractors, and 6 spiral screw extractors. It's an ideal addition to any home or mechanical tool collection, capable of handling most maintenance tasksVersatile Applications: The Screw Extractor Set with drill bit are suitable for use on wood, metal, and wallsUser Friendly Design: Designed to provide maximum power while reaching deeper screw removal positions without needing deep holes for engagement. great for use in tight space where it can easily remove partially exposed damaged fastenersConvenient Storage Solution: The bolt extractor kit comes in a waterproof case that keeps your tools organized and easy to carry. It ensures your tools are neatly stored and protected from loss, rusting, or damage Specification: Material: Steel Color: Multicolor Size Chart: Box36.5cmx25.5cmx6cm/14.37inchx10.04inchx2.36inch Package Includes: 1Bolt Extractor Kit (Include 49Pcs)