These are plastic razor blades made by Scraperite. They come with a little holder. And what these are good for is any task where you need to delicately scrape something off of a surface that you don’t want to scratch up with conventional razor or palette knife.

Just last week, my wife found this great tin-framed mirror at a yard sale, that had old stickers and gunk on it. I put a few drops of goo-gone on there and used the plastic blade to work off the stickers. It felt like the perfect tool for the job and it spared me from having to pick away at it with my nails. Plus, you can sharpen these with sandpaper if you want a really fine edge. The same can’t be said of your fingertips.

You can get a bag of five of these plus the holder for around $8-12 (available here on Amazon). And when someone comes to you needing a label scraped off a jar, you’ll look like a total pro. So do it.

You can find thousands of reader recommended tools like this at Cool Tools.

Update:

I still love these things. Aside from scraping off labels, I frequently use them for scraping hot glue drips off my workbench. Scraperite also sells these in other hardnesses, noted by different colors. And if you have a bigger job to handle, I’ve also reviewed a super-sized version of the same idea — the Lodge Pan Scraper.