As an industrial and scientific user I highly recommend these carbide tipped hole saw blades. their precision cut through stainless steel with ease, leaving behind clean and accurate results. As a result of using these blades, I found that they save me time and money on replacements due to their longevity .THE only downside is that they can be a bit pricey compared to other hole saw blades on the market. Overall, a great investment for any professional cutting metal..