200mm resin lap disc for grinding gemstone
US $2.20-$8.45
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| Abrasive Type | A- Aluminum oxide | WA-White aluminum oxide | |
| C-Silicon Carbide | AC-Aluminum oxide/Silicon Carbide | ||
| Z-Zirconium aluminum grain | ZA-Zirconium aluminum grain/Aluminum oxide | ||
| Grit Size | 16-24 coarse | Structure | 0-3 tight |
| 30-60 medium | 4-7 medium | ||
| 70-220 fine | 8-14 open | ||
| Hardness | H-K soft | Bond | BF-Phenolic resin |
| L-O medium | |||
| P-S hard | |||
| T-S very hard | |||










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