What is this tool?

Question

http://i97.photobucket.com/albums/l238/clickyfri/whatisthis.jpg

I found this in a grated bridge with the handle sticking straight up just waiting to puncture someone's tire so I turned around and picked it up. I was going to toss it but became curious as to what it actually is.

Answer 1

it is for attaching metal stud to track etc. It punches a hole and locks the stud in place.

Answer 2

It doesnt look like any sort of horseshoeing tool that Ive ever seen. My guess is that it is some sort of industrial punch....not sure though.

Answer 3

Is there a brand name, or any writing on it?

Answer 4

Looks like a blacksmith/horsemaker's tool

but I'm not complete sure of function, purpose, or name.

Answer 5

It looks like a eyelet or grommet applicator... you put the grommet in the holder, and then smash it closed with the "hook" end .  That or some sort of leather hole punch.