Color ring | Grit | Dental lab usage | Lapidary / jewelry / gem usage | ||
Black | Super coarse | 70mesh | ISO 544 | Fast aggressive on porcelain and some kind of metals. For prepping metal and ceramic | Good for texturing. Can be used on all kinds of stones and metals. Fast aggressive and bulk removal |
Green | Coarse | 100mesh | ISO 534 | Aggressive on ceramic. Used on most alloys | Used on quartz materials and porcelain, aggressive |
Blue | Medium | 170mesh | ISO 524 | Multi-purpose bur. For metals and porcelain combinations | Multi-purpose bur. For metals, stones, porcelain and enameling. |
Red | Fine | 325mesh | ISO 514 | For final shaping. Good for trimming metal margin before porcelain. | Good final shaping and pre-polishing. Smooth aggressive. |
Yellow | Extra fine | 600mesh | ISO 504 | Pre-polish. Good for final adjustment after a glaze bake. Easy to polish glaze | Pre-polish and fine finish |