The Bosch 2608584784 Metal Sheet Hole Saw, 25mm Ø, is designed for durability when cutting holes through metal. Constructed from bi-metal HSS (high-speed steel) with an 8% cobalt alloy, it offers superior resistance to tooth breakage and high heat, ensuring a long product lifetime and extreme resilience. The Vario tooth strip configuration is optimized for sawing thin materials, minimizing wear on the cutting edge. It also features a depth-stop to prevent breakthroughs and protect the work surface. This hole saw is ideal for cutting sheet metal with a thickness of less than 5 mm, including mild steel and stainless steel. It integrates Bosch's unique power-change adapter, the fastest arbour system on the market, allowing for a one-click lock and unlock of the hole saw and pilot drills. Compatible with all corded and cordless drill drivers.