Atoplee M3/4/5/6/8 Nitriding HSS Spiral Flute Metric Machine Tap Right Hand Thread Drills [All Sizes, 5pcs]

Features: The application of nitriding enhances the abrasion performance, surface hardness, fatigue limit, anti erosion ability of the tapping. Sharp and durable, the cutting edge strength is good. Small resistance, smooth chip removal, smooth cutting surface, no residue, with good machinability, it can be tapped to the button of blind hole. Flexible to be used, processing efficiency, good stability, safe and reliable, widely used, low processing cost, can be applied to a variety of jobs.