Tool Aid S&G Tool Aid 19400 Rivet Tool For Plastic Rivet

I can't remove a stuck stem, even following the directions. Needle nose plyers don't work. Any other options?

The tool does not cut the stem! How does it work?

Can someone tell me the difference between this tool and the normal rivet tool

Will this fit inside a wheel well to replace the rivets on the inside edge of wheel well trim?