M3 to M12 Taps & Hexagon Die With Thread-Pitch From 0.5mm to 1.75mm Includes Both Fine & Coarse Threaded Taps & Dies in MM Sizing Professional Grade Set in Special High-Carbon Alloy Steel For Excellent Strength Includes: Adjustable & T-Handle Tap Wrenches, Adjustable Die Wrench Titanium Cutting Edges Hold Sharpness up to 20x Longer Than Steel