Before trying these I tried half a dozen Morse brand hole saws. Milwaukee held up much better on steel. If any of these failed, it was due to mandrel thread wear, not dull or broken teeth.
Circular saw Makita HS7601, 1200 W blue/silver
58 Review
Gasoline saw Huter BS-45M 2300 W/3.1 HP black
100 Review
Saw BOSCH Keo, 0600861900
41 Review
Impact drill BOSCH GSB 13 RE (0 601 217 100), 600 W blue
37 Review
πͺ Durable DEWALT DW3986C Portable Blade 3 Pack for Efficient Cutting
10 Review
Olson 80 Inch Blade FB14580DB-025
πͺ Bi-Metal Cutting Blades: Imachinist S933414 - Enhancing Precision and Performance
Chest freezer Biryusa 155KX, white
16 Review