For the drilling of Porcelain, Ceramic, Terracotta, Masonry and Natural Stone such as Granite and Marble, you’ll need to employ Tornado Dry Cut Drill Bits and Holes Saws, distributed in Australia by DTA Australia. Available in sizes from 6mm up to 110mm – Check out the instructional videos below and always remember to use the appropriate personal protective equipment (PPE) when operating power tools.