15pcs M35 Cobalt Drill Bit Set 4.9mm Cobalt High-Speed Steel

1. Material: Made of high-speed steel, with high hardness and wear resistance, not easy to break, these drill bits cut faster, and last longer.<br>2. Instructions: Particularly effective in cutting through hard metals like stainless steel and cast iron. They are not suitable for glass or ceramic materials.<br>3. Features: Can take into account a variety of models, hand drill, percussion drill, lithium drill, and bench drill can be adapted<br>4. Use: for cutting through hard materials such as stainless steel, suitable for wood, malleable iron, aluminum, plastic, etc.<br>5. Note: Use proper speed, pressure, and heat control when using these drill bits to maintain efficiency.<br><br>