Our five-piece masonry drill bit is durable enough to be used on stone masonry and lightweight building materials. This masonry drill set made from carbon steel with a tungsten carbide head is robust. Suitable for drilling masonry, brick, concrete, stone, tiles and ceramics with conventional rotary hammer action power drills. Set comprises 4, 5, 6, 8, and 10mm bits. Use hammer action for brick, concrete and stone. Maintain constant pressure when drilling. Set drill speed to achieve the best material removal rate. Regularly remove the drill from the hole to clear debris. Apply tape to the point to be drilled when drilling tiles or ceramics to reduce slipping.