Tungsten carbide-tipped, sand-blasted masonry drill bits for concrete, masonry, brick, block and stone, supplied in a handy, soft-grip storage case. Compatible with all SDS Plus chucks. Includes 2 x 4, 5, 6, 8, 10 and 12mm bits. Tungsten carbide-tipped, sand-blasted masonry drill bits for concrete, masonry, brick, block and stone, supplied in a handy, soft-grip storage case. Compatible with all SDS Plus chucks. Includes 2 x 4, 5, 6, 8, 10 and 12mm bits.