Features: This set of taps and dies are made of carbon steel for durability and long service life W renches are very convenient and practical and they are 5 wrenches in this set . Adjustable wrench can easily and firmly clamp taps or dies. Mainly used for hand tapping and threading operation. This set contains many taps and dies in different size for various tapping and threading . It is a great tool set used to cut or form the female and male portion of nuts or bolts . Specifications: Material : C arbon Steel Standard: Metric Dies: M2x0.4, M3x0.5, M4x0.7, M5x0.8, M6x0.75, M6x1, M7x0.75, M7x1, M8x0.75, M8x1, M8x1.25, M9x0.75, M9x1, M9x1.25, M10x0.75, M10x1, M10x1.25, M10x1.5, M11x0.75, M11x1, M11x1.25, M11x1.5, M12x0.75, M12x1, M12x1.25, M12x1.5, M12x1.75, M14x1, M14x1.25, M14x1.5, M14x2,16x1, M16x1.5, M16x2, M18x1.5 Die Wrenches: M25, M38 Tap Wrenches: M3-M12, M6-M20 Taps(2pcs each size): M2x0.4, M3x0.5, M4x0.7, M5x0.8, M6x0.75, M6x1, M7x0.75, M7x1, M8x0.75, M8x1, M8x1.25, M9x0.75, M9x1, M9x1.25, M10x0.75, M10x1, M10x1.25, M10x1.5, M11x0.75, M11x1, M11x1.25, M11x1.5, M12x0.75, M12x1, M12x1.25, M12x1.5, M12x1.75, M14x1, M14x1.25, M14x1.5, M14x2, M16x1, M16x1.5, M16x2, M18x1.5 Package Includes: 2 x Die Wrenches 35 x Dies 2 x T ap Wrenches 70 x Taps 1 x T Wrench .