What kind of cutter/punch do you use?

I buddy of mine gave me this cutter today. I've never seen one like it. 2 sized holes with 2 cutting blades that are connected on one side that acts as a V cutter.

HippoTec is the brand.

Tried his out today on a torp and it cut pretty cleanly. Haven't tried the V cutter yet though.

The blades on mine look a little dull so I figured out how to take it apart so I can try to sharpen it.

Has anyone seen anything like this before?