Description of π§ Milwaukee 4" Hardened Hole 49-56-0023
Milwaukee Ice Hardened Bi-Metal Hole Saw 3/4 In. Milwaukee Ice Hardened products utilize a proprietary cryogenic hardening process that improves upon traditional heat treat processes. This is manufactured in United States. ICE HARDENED for up to 50% longer life than the competition. Matrix II Bi-Metal Teeth for greater durability. Positive Rake Angle for fast cutting. Radiused Tooth Back reduces stress on teeth. Deeper Gullets for fast chip removal and Funtional Slot Geometry provides easy plug removal.
I ordered this because the description said it was a 3/4 hole saw. They sent me a 1 1/8" hole saw. These hole saws are great, but I didn't get what I needed.
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.
Pros
Milwaukee Ice Hardened products use a patented cryogenic hardening process that improves on traditional heat treating processes
I've drilled 10 holes in 1/8" stainless steel and 1/4" sheet steel and it's still sharp. The only thing I learned from using it is that it cuts better without coolant. I've drilled with and without coolant at low RPM (recommended on the box for RPM) and dry drilling has been faster. I was surprised.
Pros
ICE HARDENED Up to 50% longer life than the competition