This grit refill pack is pre-measured for a 3-pound vibratory rock tumbler.
It contains the following grits:
- Fine: silicon carbide 220 grit
- Pre-polish: aluminum oxide 500+ grit
- Polish: aluminum oxide super fine
This grit refill pack is enough to polish 3 pounds of rock.
WARNING: This product can expose you to respirable crystalline silica, which is known to the State of California to cause cancer.
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