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This is a cordless impact driver with an unuaual 7/16" HEX chuck. AFAIK, there are no competing makes.
What has a 7/16" hex shank? Self-feed bits and hole saws.
Intended use: replacement for Holehog or other right-angle drill.
Verdict? While the hammering action is a lot louder than the usual impact driver, the tool is wonderful. NO torque back to you, so this thing won't be tearing your arm out of its' socket.
It uses the same 18v. batteries as many other Milwaukee tools.
Downside? No bit storage space in the case. I'd also like to see an LED light in the nose.