Feature: 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. Excellent Thread Tool: Spiral flute tap is an excellent tool for creating threads, cutting or forming matched female threaded parts 5. Long Service Life: Drill tap bits have stable structure, excellent 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 Note: Drill holes before use.