You know what? Just the other day on another forum I recommended that someone buy one of these to remove a stuck nipple. Well, Saturday I had a stuck nipple on my oldest 1860 Army, so I got mine out, gave it a twist, and broke one side of the ratchet!
I ended up soaking the nipple in PB Blaster and removing it with a conventional 'T' nipple wrench.
I did keep the 'bit' for the ratcheting wrench, however, as I think I might be able to use it in a 'big' mechanic's ratchet.