Long lifespan in stainless steel! Ground and sharpened fine carbide teeth for strength, durability, and precision. Cutting holes in sheet steel is unmatched by other hole saw applications. Precision is essential in industrial settings and vehicle manufacturing. At the same time, the material is highly resistant and quickly pushes conventional bi-metal hole saws to their limits. The EXPERT Sheet Metal Hole Saw is made from compact, high-quality technology and does not encounter these issues. This hole saw combines the best features in a compact form: it is durable, precise, and optimized for high-quality sheet metal work. Outstanding lifespan thanks to Bosch Carbide Technology.