Feature: 1. Cobalt‑containing 5% cutting edge has high strength, and cobalt‑containing high‑speed steel can significantly improve the wear resistance and cutting performance of the steel 2. Wide application range, high cost performance and practicality, can process stainless steel and other difficult‑to‑process metals 3. Pat the debris into a spiral shape to discharge the chips upward, which is more suitable for processing into blind holes and viscous material processing 4. Using high‑quality materials, wear resistance and durable, has a long service life 5. Small size, easy to carry and store, convenient to use and with good performance Specification: Item Type: Machine TapMaterial: High speed steel Color: Gold and Silver Size: M4: Cutter Head Diameter: Approx. 4mm / 0.16in, Blade Length: Approx.18mm / 0.7in Handle Diameter: Approx.3mm / 0.1in, Total Length: Approx.57mm / 2.2in M5: Cutter Head Diameter: Approx.5mm / 0.2in, Blade Length: Approx.20mm / 0.8in Handle Diameter: Approx.5mm / 0.2in, Total Length: Approx.63mm / 2.5in M6: Cutter Head Diameter: Approx.6mm / 0.24in, Blade Length: Approx.22mm / 0.9in Handle Diameter: Approx.5mm / 0.2in, Total Length: Approx.69mm / 2.7in M8: Cutter Head Diameter: Approx.8mm / 0.3in, Blade Length: Approx.24mm / 0.9in Handle Diameter: Approx.5mm / 0.2in, Total Length: Approx.72mm / 2.8in M10: Cutter Head Diameter: Approx.10mm / 0.4in, Blade Length: Approx.37mm / 1.5in Handle Diameter: Approx.6mm / 0.24in, Total Length: Approx.77mm / 3in Applicable: Suitable for processing stainless steel, steel plate, copper, SK601, MK80 alloy steel, die steel, iron alloy and other metals List: 1 x M4 1 x M5 1 x M6 1 x M8 1 x M10. Package List: 1 x M4 1 x M5 1 x M6 1 x M8 1 x M10