Excerpt: I'm in HVAC duct installation. The Hackzall has replaced my sawzall. It feels so balanced when cutting Sheetrock to run duct, or to cut threaded rod, or cut unistrut to hang duct, there has been these and many other uses that has made many of my co worker's jealous of this tool. I use the long life 18volt lithium batteries. I am so pleased with the hackzall, CPO had it to me in 4 days on just standard shipping.
Pros: Easy To Use, Fast Cutting Speed, Good Design, Long Run Time, Powerful