This is 1000 mesh SiC for soft rocks in Rotary Stage 4 & Vibratory Stage 3 (It takes the place of a "pre-polish" when tumbling soft rocks). It is a high quality, hard powder that...
This is 80 mesh SiC for Rotary Stage 1 (Rough Grind). It is a high quality, hard powder that re-sharpens itself as it breaks down in the tumbler. Shipped in a 1-pint plastic container...