【Sturdy and Durable】The thread tap set made of tungsten steel for durability and long service life. Suitable for unalloyed and low alloy steels up to 900N/mm² strength, malleable cast iron and non-ferrous metals. 【Multiple Options】This set contains many dies of different sizes for different threaded holes, convenient for your needs. 【Practical and Convenient】Completely sorted in a handy storage box. The taps come in a sturdy plastic case for your convenience and storage. 【Widely Used】It is a great tool kit, a great assembly for the service vehicle or workshop. Internal tap models: M3x0.5, M3x0.6, M4x0.7, M4x0.75, M5x0.8, M5X0.9, M6X1.0, M6X0.75, M7X1.0, M7XO.75, M8X1.25, M8X1. 0, M10x1.25, M10x1.5, M12X1.75, M12X1.5, 1/8-27NPT Internal die models: M3x0.5, M3x0.6, M4X0.7, M4x0.75, M5X0.8, M5X0.9, M6X1.0, M6X0.75, M7X1.0, M7x0.75, M8X1.25, M8X1. 0, M10X1.25, M10X1.5, M12x1.75, M12X1.5, 1/8-27NPT 1 x Tap Wrench: M3-M12 1 x Screwdriver Bit: 25MM 1 x T-Shaped Screwdriver 1 x T-Shaped Tap