https://www.homedepot.c
HD is offering the M18 fuel hole hawg (tool only) and carbide hole saw packout kit for $279. After canceling or returning the hole saw kit, the hole hawg becomes $156
This is specialized tool used mostly by electricians.
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Alternatively you can also get the hole hawg and sawzall for $257.20 after hack 2.0. Both are fuel versions.
https://www.homedepot.c