7 SIZES: There are a total of 7 taps in different sizes from M3 to M12, which can help you cut different threads to meet your different needs. EASY TO USE: Tap set Taps are used for cutting new threads or repairing damaged threads, it will give you a smooth thread cutting experience. WIDE APPLICATION: These taps are great tools for creating threads on wood, wood etc, plastic, aluminum or many other soft materials. CLEARLY MARKED: The size is clearly marked on the surface so you can easily find the size you need. HIGH QUALITY: These taps are made of high quality bearing steel for high hardness, sturdiness and durability.