Review on Champion CT5 1 15 16 Tungsten Carbide by Loren Schmidt

Carbide teeth cut very well on stainless steel but the speed needs to be much slower than mild steel and cutting oil helps. Overall good life and the number of holes before sharpening is way more than I could dream of bimetal bits. These are mid-range cutters and a good improvement over bi-metal hole saws. When I work in food processing plants or hospitals I use the Metal Pro instead as they mount to the Hole Pro mandrel adapter which works with their dust shields. Blue Boar TCT Metal Pro 1-3/8" (35mm) Carbide Cutter. Stainless steel up to 5/16" thick sheet metal, cast iron, aluminum, copper, brass, sheet steel, fiberglass, fiberglass. More holes per dollar than HSS or bimetal bits