600F silicon carbide grit for rock polishing/rock tumbling. www.gmrockshop.com

600F Fine - Silicon Carbide Grit

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600F fine silicon carbide grit; great for a final grind, or use as a pre-polish.

Rotary: Use 2 tablespoons per pound of rock (stage 3).
Vibratory:  Use 1/2 tablespoon per pound of rock (stage 4).