Working with hard metals requires the best cobalt drill bits. We tested top picks to see which bits could bore through the toughest metals. Check out our reviews and discover which one came out on top ...

In particular, we’re interested in cobalt, which dissolves very easily in steel, so it isn’t as affected by the Bessemer or BOS methods. Sometimes cobalt is intentionally added to steel ...

The bits are made of high carbon steel hence ... They are basically composed of cobalt and super strong steel alloy, which results in an ultra-strong material. In addition, the material can ...