【5 sizes】M3, M4, M5, M6, M8 in five different sizes to meet your different threading needs. 【Superior quality】Taps made of high speed steel, titanium coated for high hardness and rust resistance. 【Good thread cutting tool】Ideal for cutting metal threads, suitable for drilling machines, thread cutting machines, automatic machines, automatic centers, milling machines and other machines. 【Excellent design】Standard thread pitch design, clear and crisp, no burr, ideal for tapping through holes, fast and clean chip removal. 【Wide range of applications】Suitable for wire processing and thread cutting in mechanical engineering, for processing stainless steel, copper, alloy steel, aluminum alloy, iron alloy and other materials.