Свредла за бетон

Masonry drill bits - hardened carbon steel body, Carbide grade tip for faster penetration and longer bit life. Designed for drilling into brick, block, stone, quarry tiles or concrete. Hard cutting tip made from tungsten carbide bonded to a spiralled steel shaft. Spiral flute for dust extraction. the hammering breaks up the masonry at the drill bit tip, and the rotating flutes carry away the dust. Rotating the bit also brings the cutting edges onto a fresh portion of the hole bottom with every hammer blow.