＊Cutting edge tip has exceptional toughness, with wide secondary edge for easy and fast chip removal. ＊Low cutting resistance; strong helix angle and special flute design allow coolant to flow easily to the cutting edge. ＊ Extremely high precision in round holes. ＊ Made of high-cobalt M42 high-speed steel, offering high toughness, easy regrinding, and excellent wear resistance.