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 ...

as drill bits can come in a range of materials. This way, they can handle different drilling situations, rates of use, and, as a result, temperatures. High-speed steel is standard for most bits ...

We’ve used a lot of tools to drill circuit boards — power drills, power drills in “drill press stands”, and high-speed rotary tools — but when we started doing projects on a schedule ...

ADJUSTABLE SPEED】The speed regulator with high precision and wide speed range allows you to adjust different speeds according to different applications to achieve the expected results.

The brand had tons of bestselling tools still on sale ... This hammer drill packs a punch with its powerful motor, giving you pro-level control with a high-speed transmission and variable speed ...