MJR Tumblers
MJR six-stage rock tumbling grit refill
Six documented grades include an extra-coarse start and two final polishing grades.

Price info
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Use and fit
Choose this set if your recipe calls for a more graduated sequence than a four-stage pack. It includes an extra-coarse first cut and a separate 12,000-grade aluminum oxide finish. Select the three-pound-barrel option by batch size and plan to supply filler separately.
Specifications
- Brand
- MJR Tumblers
- Listed model
- MJR-6stages
- Verified detail
- Six documented grades include an extra-coarse start and two final polishing grades.
Questions before buying
Why choose six stages instead of four?
This assortment adds an extra-coarse starting grade and another finishing grade. Choose it if those extra steps match your material and process.
Compare before you buy
The four-stage kit covers a shorter documented sequence for a small barrel. MJR four-stage grit refill for 3 lb barrels