We may earn revenue from the products available on this page and participate in affiliate programs. Learn More › When you need to precisely drill through metal, cobalt drill bits are the only answer.

We may receive a commission on purchases made from links. DeWalt's Black and Gold drill bits are made from a type of tool steel known as High Speed Steel, often abbreviated as HSS. While HSS is a ...

When I was drilling through a hardened steel I went to a specialty metals shop and they recommended cobalt bits. They were also much cheaper than lows but unfortunately have since gone out of business ...

Buying a drill bit set saves money and — as they invariably come in some kind of case — gives you convenient storage and easy identification. However, what might seem like minor differences in shape ...

A drill bit is what actually cuts into the rock when drilling an oil or gas well. Located at the tip of the drillstring, below the drill collar and the drill pipe, the drill bit is a rotating ...