Review on 🔪 Improved MK Morse AV68 4 Inch Bi Metal Blades by Mohmed Burt

I bought this hole saw because I needed to run a new 4 inch dryer exhaust duct. The diameter (4 1/8) was ideal for this purpose. However, the saw was not as good as the one in my signature Milwaukee set. Either there was too much paint on it, or the teeth weren't offset enough. One way or another the saw is "booted" and overheating. It was barely deep enough to drill through the end joist of my old farmhouse (timber size), even after I re-drilled the arbor. While this saw managed to get the job done, I'm glad I didn't purchase an entire set from this brand.