Can You Identify This Mystery Kitchen Gadget?

Good Questions

Q: I was helping my friend unpack his kitchen and he had this strange gadget. He didn't know what it is for. The metal handle thing rotates.

Sent by Julie

Editor: As usual with these mystery gadgets, we're not entirely sure this belongs in the kitchen at all (remember this dog grooming tool?).

Any ideas?

Related: Mystery Gadget! Squeezy Handles and Spiky Ring

(Image: Julia via email)