The Special for Sheet Metal hole saw offers durability when cutting through metal. This hole saw is made of bi-metal HSS (high speed steel), with 8% cobalt alloy, resulting in a lower risk of tooth breakage and higher heat resistance for extreme durability and long lasting cutting. The tooth geometry with Vario toothing is ideal for sawing thin material, with reduced wear on the cutting edge. In addition, a depth stop function prevents punctures to protect the work surface. Use this hole saw for cutting sheet metal less than 5 mm thick, such as mild steel and stainless steel. The Special for Sheet Metal hole saw supports Bosch's unique Power-Change adapter with the fastest adapter system on the market. It allows you to separate and connect the hole saw and centre drill with just one click.