Features Spiral Cutting Teeth Design: Engineered with spiral cutting teeth for a secure grip, effectively removing round or damaged screws with ease Durable 10-Piece Set: This comprehensive set includes 10 sturdy tools, ideal for extracting nuts, bolts, screw heads, and studs, ensuring versatility in repairs Compatible Size Range: Features a versatile size range of 9 to 19mm, making it suitable for various disassembly tasks across multiple applications Enhanced Efficiency: Designed for use with electric wrenches or sockets, these tools significantly improve your working efficiency and reduce repair time Premium Chrome Vanadium Steel: Crafted from high-strength chrome vanadium alloy steel, ensuring durability and longevity for all your nut disassembling needs Features: 1、Spiral Cutting Teeth: The spiral cutting teeth provide positive grip for removing round or damaged screws 2、Sturdy Tools: This is a set of 10 sturdy tools that can help remove nuts, bolts, screw heads, studs, etc 3、Suitable Sizes: The sizes are suitable for its disassembly are 9, 10, 11, 12, 13, 14, 15, 16, 17, and 19mm 4、Quick Working Tools: These tools can be used with electric metrics wrenches or sockets for improving your working efficiency 5、Chrome Vanadium Alloy Steel Material: Made of chrome vanadium alloy steel, has high strength and is very Specification: Item Type: Broken Nut Extractor Material: Chrome vanadium alloy steel Purpose: Screw remover Colour: Black Use Caliber: mm / in (Approx.)27mm / 1.1in Package List: 10 x Broken Nut Extractor Note: Please wear protective gear when removing the damaged nut to prevent the debris from splashing and hurting yourself. Package List 10 x Broken Nut Extractor