Bosch Professional 7-Piece CYL-1 Masonry Drill Bit Set - 3, 4, 5, 5.5, 6, 7, 8mm

It is compatible with impact drills. The CYL-1 Drill Bit is optimised for drilling in masonry. Its 2-flute U-shape provides good dust removal while its standard carbide tip makes the bit more wear-resistant. This product is intended for use in masonry and limestone.