This Universal masonry drill bit set comes with 10 pieces and can be used with brick and concrete block Universal Masonry Drill Bit Set comes with 3mm, 4mm, 5mm, 6mmx 100mm, 6mmx 150mm, 7mm, 8mmx 120mm, 8mmx 150mm, 10mm and 12mm bits Tungsten carbide tip is drill bit set ideal for drilling into plaster and concrete