• Consists of popular sizes within engineering industry, water and sanitation industry, electric installation industry • Sandflex® Bi-Metal holesaws are specially designed for Metal cutting but can be used in most materials such as wood and plastics • The holesaw cuts through ferrous metals (steel, stainless steel, cast iron) and non-ferrous metals (aluminium, brass, copper) • Cutting depth max 38mm (1 1/2") • 4/6 teeth per inch • Arbors require a Power drill with 13mm chuck