I keep dozens of crowns for my fabrication shop. Milwaukee Ice Hardened Hole Saws consistently last the longest and cut the best holes in mild steel and wood. Dewalt, Starret, and Diablo saws are good too, but Milwaukee is better. And mostly for the same price.
πͺ Bi-Metal Cutting Blades: Imachinist S933414 - Enhancing Precision and Performance
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Enhanced Cutting Efficiency with Olson FB23370DB 0 025 2 Inch Blade
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πͺ DEWALT DW3984C Portable Blade Set of 3-Pack
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πͺ Durable DEWALT DW3986C Portable Blade 3 Pack for Efficient Cutting
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