This is a hole punch for leather. Of course, it can also be used for
punching holes in materials of similar consistency, such as paper or
In use it is placed on the piece to be punched, which rests on
something like a cutting board, and the back end is struck with a
mallet. As holes are punched the waste is pushed into the body of the
punch and, once clear of the punch head, falls out the hole in the
side of the body.
The knurled and threaded plastic ring is from some other piece of