Looks normal...right? That's the bit holder on a drill-driver I used to loosen the bolt assembly screw on a Savage rifle. The damned thing is tightened at the factory to a ridiculous degree, and it's impossible to remove by hand. 1/4" hex in the bit holder and zip...zip...zip. Nice and easy, and I can now clean the bolt assembly easily.

Except...The bit holder won't come out! That collar slides up and down just fine...locking and unlocking the holder, but it is jammed so tight that I cannot remove it. Those streaks on the bit holder are from the teeth of my vice!

Yes, we'll just have to sell the house and move.