Descriptions: These machine hand taps adopt high speed steel with high wear and heat resistant, which is durable and has long service life.There are total 10 pieces in different sizes from M1 to M3.5 that you can use for tapping various threads.With these hand taps, you will have a smooth tapping experience with them. Features: Adopting high speed steel with high wear and heat resistant, which is durable and has long service life. There are total 10 pieces of taps in 10 different sizes from M1 to M3.5 that you can use for tapping various threads.Standard thread distance design, clear and tidy, no burr.These machine hand taps are used for machining nuts or other common thread on the machine. With these machine hand taps, you will have a smooth tapping experience with them. Specifications: Material: high speed steel 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 Package Included: 10 x Machine Hand Tap(Coarse thread) .