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💎 Polish Like a Pro, Shine Like a Star!
The MJR Tumblers Rock Grit Kit is a complete 4-stage polishing system designed for 10lb rock tumblers, featuring coarse to ultra-fine 12,000 grit aluminum oxide polish. Pre-measured for convenience and compatible with rotary and vibratory tumblers, this USA veteran-owned brand kit ensures consistent, high-quality rock polishing results with minimal effort.







| ASIN | B07FHLKRY1 |
| Age Range Description | Kid |
| Brand Name | MJR Tumblers |
| Colour | Grey |
| Customer Reviews | 4.5 4.5 out of 5 stars (307) |
| Educational Objective | Develop patience and understanding of multi-step processes through rock tumbling. |
| Indoor Outdoor Usage | Indoor |
| Is Assembly Required | No |
| Item Weight | 30 Ounces |
| Manufacturer | MJR Tumblers |
| Manufacturer Part Number | MJR10pgk |
| Manufacturer recommended age | 8 months - 8 years |
| Material Type | Silicon Carbide Aluminum Oxide Plastic Pellets |
| Model Number | MJR10pgk |
| Number of Packs | 1 |
| Operation Mode | Manual |
| Set Name | 10 lb |
| Size | for 10lb barrel |
| Supported Battery Types | No batteries required |
| Theme | Nature |
| Unit Count | 1.0 count |
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