FAQs

Frequently Asked Questions


Cobalt bits are best for hard steels, while HSS with titanium coating works well for mild steel.

Carbide-tipped bits from brands like Drill Bits World are reliable for both brick and concrete.

Coatings like titanium nitride reduce friction, resist wear, and extend bit life.

Limited depth, slower on very thick materials, and requires a pilot bit for accuracy.

They wear out quickly on soft materials, can be expensive, and require water cooling to prevent damage.

Slower drilling speed in some materials, higher cost, and the need for constant cooling and cleaning.

Common types include twist bits, spade bits, auger bits, and Forstner bits.

Common coatings include black oxide for rust resistance, TiN (titanium nitride) for wear resistance, and uncoated for general use.

Color varies by manufacturer. Identify masonry bits by their carbide tip shape, not the color.

Electricians typically use cordless power drills paired with step bits for metal, spade bits for wood, or fish bits for running wire.