Last week I was in Boulder talking to a couple of carpenters on a residential construction site, and they were breaking bits left and right because the engineer decided that they needed to run threaded rod through some 14” beams on the porch. They tried everything from flex bits to augers with extensions.
I wish I had arrived there sooner because it would have been the perfect application for a 24” Nail Killer Auger.
The bit is tough enough for this application, and it would have saved them 6 broken bits, 7 trips up and down the ladder, and somewhere around 50 points of blood pressure.
On a side note to the engineer who determined that they needed to drill 20” straight down through the middle of the beam from the top of the porch, don’t show up at the job site without some protection, or at the very least, a six pack.