Review on Effortless Polishing with ZFE Polishing Compound Syringes for Jewelers by Jason Hayes

Idk they work for me. I've seen reviews saying they won't scratch glass and the ones that are supposed to be thinner "feel rougher" (laughs good), but for $13 I gave it a try anyway. I'm glad I did. I use them for loading leather slings and they all work as they should. There are no new scratches as I work through them and the edge is getting cleaner and more polished so it's safe to say mine at least matches the grit on the labels. I have used most diamond compounds on the market. and I can safely say that this set is by far the most economical. Also, I only tested 40 microns, but it definitely scratched the mirror I tried it on.