Long lifespan in stainless steel! Ground and sharpened fine carbide teeth for strength, durability, and precision. Cutting holes in sheet metal is unmatched by other hole saw applications. In industrial settings and vehicle construction, precision is essential. At the same time, the material is highly resilient 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 face 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.