Please help me ID this pneumatic tool

Hello all, this tool is referred to as an air crimper in some videos but I am not having any luck on finding this tool online or in stores.

At 1:51

the man uses the tool to press together seams that are adhering together. The tool punches the material together to get a tighter adhesion.

Any idea what this tool can be?

Here is another video they show it again at http://videos.howstuffworks.com/discovery/35828-howstuffworks-show-episode-10-how-wetsuits-are-made-video.htm

Thanks guys.

Wow, I have never seen that before. Let me do some digging and see what I can come up with.

Thanks, I am also doing some digging and will come back if I find something.