The Milwaukee® Hammer Drill Bits have been designed with a 2 cutter carbide tip to allow for drilling into concrete, brick, block and soft material for electrical installations, lighting fixtures and holders. Our Hammer Drill Bits also features a red flute for easy identification along with a wide flute design to remove dust faster, while also reducing heat build-up, resulting in more holes per charge. Available sizes range from 3mm up to 12mm.