6 Stage Refill Grit Kit with MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish Unparalleled Results. For 15lb Rock Tumblers w Silicon Carbide and Plastic Pellets

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6 Stage Refill Grit Kit with MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish Unparalleled Results. For 15lb Rock Tumblers w Silicon Carbide and Plastic Pellets