Concrete and Masonry Drill Bit Set, 4 pcs. and 5 pcs.

Concrete and masonry drill bit, according to ISO 5468, tungsten carbide-tipped, high-temperature brazed, broad and deeply supported tungsten carbide plate, cutting action, asymmetrically shaped drill spiral for optimal drill dust transport, hammer-proof high-performance drill bit for all rotary and impact drills, black burnished blank, fully ground surface, for granite, concrete, brickwork, natural and cast stone, sand-lime brick.