Im a far cry from being an authority in GEM blades (or anything else, for that matter). I *think* the CVS carbons are made by Personna. Seems I read that somewhere. If anyone knows the answer, please chime in.
I have one PTFE blade in a sampler pack that I need to try. Most folks who use GEM style razors seem to love them.
I'm not sure about the Treet blades at the gas station either. I'm thinking that Treet branded blades are for shaving, but maybe they make some for scraping as well. They probably work very well for what the folks are using them for though, as I think I'm pickin' up what you're puttin' down.

GEM blades are the most confusing of them all. Aside from the stampings on the spine, they're identical. You can't look at them and distinguish the ones for shaving and the ones for scraping paint. Unless you're buying them from a place like WCS, Maggard's, or a pharmacy (if they're in with all the other shaving items), it's a crapshoot.
If anyone has anything to add, please do.
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