Medium Coarseness, unmounted abrasive knife edge shape impregnated silicon carbide are great for deburring, cleaning, smoothing and polishing sterling silver and gold as well as all other metals to a high lustre.
- White: very coarse
- Black: coarse
- Blue: medium coarse
- Pink: fine
Here’s a blog on polishing you might find interesting: https://workingsilver.com/polish-your-style/