






✨ Elevate your rock polishing game with pro-grade grit ⚙️
MJR Tumblers 400/600 Grit Aluminum Oxide is a premium stage 3 pre-polish grit designed for rotary and vibratory rock tumblers. Made in the USA by a veteran-owned brand, it delivers consistent, super-fine abrasion to refine stones, glass, and minerals, preparing them perfectly for final polishing.







| ASIN | B0CP8VPZXZ |
| Best Sellers Rank | #21,924 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #35 in Tumbling Media |
| Brand Name | MJR Tumblers |
| Compatible Material | Premium Quality Aluminum Oxide |
| Customer Reviews | 4.4 4.4 out of 5 stars (20) |
| Grit Material Type | Premium Quality Aluminum Oxide |
| Grit Number | 600 |
| Grit Type | Super Fine |
| Included Components | Instructions and Grit |
| Manufacturer | MJR Tumblers |
| Material Type | Premium Quality Aluminum Oxide |
| Number of Items | 1 |
| Part Number | MJR20p400/600AO |
| Unit Count | 1 Count |
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