Hi-Spec 20 Piece Metric Tap Die Set - Complete M3 To M12 Fine Coarse Tools 20pc Versatile Tap Die Set for Metalworking: Includes 9 metric taps and 9 matching dies ranging from M3 to M12, perfect for cutting, chasing, and threading metals like carbon alloy steels, cast iron, aluminum, brass, and bronze; ideal for DIY enthusiasts, garage mechanics, and workshops Durable GCr15 Alloy Steel Construction: Taps and dies are made from high-carbon chromium-bearing GCr15 alloy steel, providing excellent hardness, wear resistance, and corrosion protection; designed to deliver professional results and lasting quality Ergonomic Wrench Handles for Precision: Comes with zinc alloy body tap and die wrench handles, featuring A3 carbon steel handles with knurled, non-slip grips; provides reliable control and comfort during threading tasks on larger tap sizes Complete M3 to M12 Coverage: Tackle a wide range of threading projects with metric taps and dies in sizes M3x0.5, M4x0.7, M5x0.8, M6x1.0, M7x1.0, M8x1.25, M9x1.25, M10x1.5, and M12x1.75, ensuring you have the right tools for both fine and coarse threads Compact Organized Storage: Keep your tools tidy and accessible in the slimline tray case, designed for easy storage and transport; perfect for maintaining an organized workspace in your garage or workshop