About the Milwaukee 49-56-9620 model 1-11/16" Ice Hardened Hole Saw
The Milwaukee 49-56-9620 model 1-11/16" Ice Hardened Hole Saw is a part of the Hole Saw Series. This saw utilizes a proprietary cryogenic hardening process that improves upon traditional heat treat processes. As a result, it is consistently harder throughout, giving you up to 1-1/2X the life than that of the competition.