SNUG FASTENER TEN 5/32" x 5-1/2" CARBIDE DRILL BIT FOR STONE Tapcon Masonry. screw. They drill very well in concrete and mortar. I have also used them for bricks. If it's not a soft brick, they won't last long. They are in my home store. If I live in a brick house, I wouldn't be without her. They also drill a large pilot hole for larger rock bits. A length of 5 1/2 inches is sufficient for most needs. Highly recommended.