1. N Tap: Thread Size: M3 x 0.5; Thread Length: 13.5mm/0.53', Total Length: 52mm/2.05', Shank Side Width: 2.5mm/q'. H2 tolerance, righthanded, with clean threads and sharp cutting edges for fast and precise threading. 2. Special Features: The N design helps prevent breakage and enhance efficiency. The spiral tip guides the tap into the hole, reducing required torque, while the grooves efficiently remove excess material from the hole and workpiece. 3. Wide Applications: Ideal for blind or deep holes and sticky materials. Suitable for stainless steel, aluminum, cast iron, alloy steel, mild steel, nonferrous metals, hard plastics, etc. Compatible with drills, tapping machines, CNC machines, and milling machines. Use with tapping oil for more precise threads and longer tap life. 4. Sturdy Durable: Made of M35 cobalt speed steel for hardness, wear resistance, heat resistance, and thermal shock resistance. The titanium coating provides corrosion resistance, prevents rust, and ensures smoother operation.