I saw a contractor not long ago drilling countersinks with a flat blade steel bit. It was really fast and strong. It is all one piece. Not like the Dewalt etc. countersinks that are two piece with replaceable bits. I have broke way to many of these.
I asked him where he bought it and he couldn't recall. Although he said that he always gets asked this when people see the bit.
Has anyone ever seen one? Where do you get them?
I wish I had a picture, but I've been googling all night and haven't found one.