Spiral Point Tap set Metric and Standard Tap Drill Bit Set Threading tool M3 M4 M5 M6 M8 M10 M12 (7Pcs)
7pcs taps in different sizes, meet your different demand.
Standard coarse thread, M3*0.5, M4*0.7, M5*0.8, M6*1.0, M8*1.25, M10*1.5, M12*1.75.
Made from HSS 6542, treated with nitriding technique, better wear resistance.
Spiral point tap, chip removal forward, perfect for through hole tapping, not use on blind hole.
Used with machine or manual equipment, suitable for low-carbon steel, thin stainless steel, aluminium and so on, not for high hardness material such as High-Carbon Steel, etc.