It is made by Lisle, specifically made for removing gaskets. The carbide bit is held on by a screw, can be rotated / flipped to provide 6 total wear sufaces.

The debris kinda peels off and curls up cleanly, nothing will fly into your eye.

I found one souce online:

Lisle scraper

..I'm sure there are lots of others, most auto parts stores can order Lisle tools. I also swear by their "wrinkle band" ring compressor.

Rick