1. Made of high-speed steel, super-hard high-speed steel, and other materials; suitable for drilling holes in various sheets: steel, stainless steel, aluminum alloys, etc.;
2. Have two main flute series for chip removal: straight flute and spiral flute;
3. Sharpened on precision CNC grinding machines, ensuring high cutting edge quality;
4. Can be coated with coatings such as TIN and TIALN to improve performance.