Features： 1、Durable and Corrosion Resistant: Made of good quality Ti plated high speed steel, durable and corrosion resistant, possess high hardness 2、9 Sizes From M2-M12: There are 9 different sizes of taps from M2 to M12, you can use to tap various threads 3、Spiral Flute Help to Remove Debris: The tap adopts a spiral flute design, which is beneficial to remove debris and not easy to break 4、 Thread Tool: Spiral flute tap is an tool for creating threads, cutting or forming matched female threaded parts 5、Long Service Life: Drill tap bits have stable structure, performance and long service life Specification： Item Type: Spiral Flute Tap Set Material: Ti plated high speed steel Purpose: Used to create threads, cut or form matching female threads Specification: Model Work length(approx.) Rod diameter(approx.) Total length(approx.) Recommended drilling(approx.) Tail   M2x0.4  11mm / 0.4in 3mm / 0.12in  43mm / 1.7in  1.6mm / 0.06in Cone  M2.5x0.45  13.4mm / 0.5in 3mm / 0.12in  47mm / 1.9in  2.0mm / 0.08in Cone  M3x0.5  13.5mm / 0.5in 4mm / 0.16in  50mm / 2in  2.5mm / 0.1in Cone  M4x0.7  17mm / 0.7in 5mm / 0.2in  57mm / 2.2in  3.3mm / 0.13in Cone  M5x0.8  19.5mm / 0.8in 5mm / 0.2in  63mm / 2.5in  4.2mm / 0.17in Cone  M6x1.0  21.8mm / 0.9in  6mm / 0.24in  67mm / 2.6in  5mm / 0.2in Cone  M8x1.25 23.75mm / 0.9in  6.5mm / 0.26in  71mm / 2.8in  6.8mm / 0.27in Flat  M10x1.5 28mm / 1.1in  8mm / 0.31in  80mm / 3.1in  8.5mm / 0.33in Flat  M12x1.75 30.2mm / 1.2in 9mm / 0.35in  89mm / 3.5in  10.3mm / 0.41in Flat Package List： 9 x Spiral Flute Tap