The Special for Sheet Metal Hole Saw offers durability while cutting holes through metal. Made of bi-metal HSS (high-speed steel) containing 8% cobalt alloy, this hole saw has less risk of tooth breakage and higher heat resistance for extreme resilience and a long product lifetime. The configuration of the teeth on the Vario tooth strip is ideal for sawing through thin material with reduced wear on the cutting edge. Furthermore, a depth-stop feature prevents breakthroughs to protect the work surface. Use this hole saw when cutting through sheet metal with a thickness of less than 5 mm, such as mild steel and stainless steel. The Special for Sheet Metal Hole Saw features Bosch’s unique power-change adapter with the fastest arbour system on the market. It allows for locking and unlocking the hole saw and pilot drills in one click. It is suitable for use with all corded and cordless drill drivers.