10 different metric sizes: M1, M1.2, M1.4, M1.6, M1.7, M1.8, M2, M2.5, M3, M3.5 (coarse thread) for tapping different threads. Made of high speed steel with high heat resistance, wear resistance and durability for long service life. Standard thread distance design, clear and tidy, no burr, fast chip removal. Micro taps are mainly used for watch, automobile and machine repairs, as well as for machining low hardness wood and soft metal holes. The taps used for machining nuts or other common threads on the machine, will provide you with a smooth tapping experience and increase your productivity. Product Features Material: high speed steel (HSS) Tap size: M1 * 0.25 - Total length: 36 mm M1.2 * 0.25 - Total length: 36 mm M1.4 * 0.3 - Total length: 34.6 mm M1.6 * 0.35 - Total length: 34.8mm M1.7 * 0.35 - Total length: 35 mm M1.8 * 0.35 - Total length: 36 mm M2 * 0.4 - Total length: 44 mm M2.5 * 0.45 - Total length: 47 mm M3 * 0.6 - Total length: 50mm M3.5 * 0.6 - Total length: 51 mm