Drill bits made of cobalt are specifically intended for drilling strong steel. Heavy-duty cobalt lasts four times as long as black oxide. These cobalt drill bits are ideal for drilling stainless steel, as well as cast iron, titanium, and other hard or abrasive metals.
- Stainless steel finish for improved corrosion resistance
- Feature a sturdy steel construction
- Maximum speed & Life in stainless steel and other hard metals