Durable in Sheet Metal - The Special for Sheet Metal hole saw offers longevity when cutting through metal. This hole saw is made from bi-metal HSS (high-speed steel) with an 8% cobalt alloy, which reduces the risk of tooth breakage and provides higher heat resistance for extreme durability and long-lasting cutting. The tooth geometry with variable pitch is ideally suited for sawing thin materials, minimizing wear on the cutting edge. Additionally, a depth stop function prevents breakthrough to protect the work surface. This hole saw is suitable for cutting sheet metal with a thickness of less than 5 mm, such as unalloyed steel and stainless steel. It is compatible with all cordless and corded drill drivers. The Special for Sheet Metal hole saw supports Bosch's unique Power Change adapter, featuring the fastest adapter system on the market. It allows for the quick separation and connection of the hole saw and centering drill with just one click. For use with Bosch's Power Change Plus quick-change adapter: for accuracy and robustness.