Designed for drilling in extremely hard materials, including stainless steel. Cobalt drill bits have a great resistance to heat and friction providing a longer tool life. Century 135 degree quick-cut points are self-centering and penetrate faster with less pressure. Cobalt drill bits offer 14 times Life Rating when compared to standard 118 degree point drill bits.
I purchased an industrial drill bit hoping it would last me a while. HOWEVER, after just a few uses, the bit started to dull and became completely unusable. Thanks to my knowledge gained in practice, I can confidently say that this product is not up to par. While the price may seem reasonable, you'll end up spending more in the long run due to its poor quality. The only pro is its initial affordability but that`s not enough to make up for its lack of durability. .
The Century Drill Tool 26220 Cobalt is a must-have if you`re a DIY enthusiast or professional carpenter. Based on my observations, i was impressed with its durability and longevity, as it remained sharp after multiple uses .The cobalt coating helped it resist heat and wear, making it ideal for drilling through tough materials such as stainless steel. However, its higher price point compared to other drill bits in the market may be a drawback for some. Overall I highly recommend this cobalt…
Drilled only 9 holes in 1/8" mild steel and then went completely dull and unusable. This was after drilling a pilot hole with a 3/16" drill bit. I don't buy anymore. too expensive for only 9 applications.
Pros
Designed for drilling extremely hard materials including stainless steel