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 ...

Drill bits for boring are thin, cylindrical cutting tools that the drill's chuck holds tightly. As the drill spins, the boring bits cut through wood, metal, plastic, glass, or concrete.

Thick masonry demands equally rugged drill bits to safely bore into the material, with reinforced bodies and bits that won't crack under the pressure. For such a purpose, the Warrior Masonry Bit ...