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 with a snap-on lid. Not for vibratory tumblers. This is 1.5 pounds of 80 grit Silicon Carbide powder at $6.17 per pound.