For sale is a 3 3/4 in taper shank drill bit. It is absolutely HYOOGE drill bit, guaranteed to attract attention of your friends of both sexes. A great conversation starter.
The DeWALT drill is shown for size reference only and is NOT a part of this auction.
More seriously, this 30 lbs high speed steel drill bit is surplus of Fermilab and, though it has signs of handling, displays ABSOLUTELY NO SIGNS OF ACTUAL USE. It is VERY sharp and I actually cut a finger with it accidentally. Its taper shank has no circular gouges of any kind either.
It is bigger than MT5, I would say it is MT6 though I am not sure.