Not that I know of (I've built a fly tying vise for my brother, but otherwise never owned one - I don't fish). I didn't see the hole in the original picture. GsT@GeneT45 -Fly tying vise is a great guess! But do they have holes in the end?
The end hole is some weird size around 5/64". It does not accept any standard thread. #4 is too big #2 is too small. I don't have a #3 to check but that would be really
Wouldn't take much at all to unlock it. I doubt it is supposed to spin. If so, it's a real bad design.Seems like a wire twister is becoming more likely. How much spinning (how fast) can the tool take and remain locked?