Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 25lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned

I am now tumbling my rocks, and have finished with the first step turned out good.Rocks are in the 2nd step and are so far looking good. So far I'm pleased.Great value. Instead of buying the small packets from a hobby store at 2x the price per oz.