Function: 1. Adopting high speed steel with high wear and heat resistance, which is durable and ma long service life 2. In total, there are 10 pieces of taps in 10 different sizes from M1 do M3,5, which can be used do threading different threads 3. Standard thread distance design, clear and orderly, no burr 4. These manual machine taps are used do process nuts or other common threads on the machine 5. With these manual machine taps, you'll have a smooth tapping experience with them Specification: Descriptions: These manual machine taps use stal high-speed with high wear and heat resistance, which is durable and ma long service life. There are a total of 10 pieces in different sizes from M1 do M3,5 which can be used do thread different threads. taps, you will have a smooth tapping with them. Characteristics: Adopting high speed steel with high wear and heat resistance, which is durable and ma long service life. In total, there are 10 pieces of taps in 10 different sizes from M1 do M3,5, which can be used do thread various threads. Standard thread distance design, clear and orderly, no burr. These manual machine taps are used do process nuts or other common threads on the machine. With these manual machine taps, you'll have a smooth tapping experience with them. Technical data: Material: stal high-speed Size: M1, M1.2, M1.4, M1.6, M1.7, M1.8, M2, M2.5, M3, M3.5 (coarse thread) Quantity: 10 pcs Weight: 16g The package includes: 10 x machine hand tap (coarse thread)