Through trial and error, I found that this Bi-Metal Hole Saw cuts through tougher materials with ease. It's a must-have in my toolbox for jobs requiring precision cutting. The saw's sharpness and durability are remarkable, and it doesn't dull quickly like other brands I've used. The only con I found was that it can be a bit pricey compared to other hole saws, but the quality definitely justifies the cost.