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✨ Polish Like a Pro, Shine Like a Legend 🎖️
MJR Tumblers’ 1-pound Extreme Polish features a premium 12,000 grit sub-micron aluminum oxide powder that delivers ten times finer polishing than typical 1,200 grit competitors. Packaged in durable ziplock bags for freshness, this polish is engineered for professionals seeking unparalleled rock and metal finishing results. Proudly veteran and disabled owned, MJR Tumblers combines expert craftsmanship with community-driven passion.







| ASIN | B0D4PLX9YP |
| Best Sellers Rank | #25,989 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #45 in Abrasive Finishing Compounds |
| Brand | MJR Tumblers |
| Brand Name | MJR Tumblers |
| Compatible Material | Aluminum Oxide |
| Customer Reviews | 4.6 out of 5 stars 133 Reviews |
| Grit Material | Extreme Aluminum Oxide |
| Grit Material Type | Extreme Aluminum Oxide |
| Grit Number | 12000 |
| Grit Type | Extreme Polish |
| Item Weight | 1 Pounds |
| Manufacturer | MJR Tumblers |
| Material | Extreme Aluminum Oxide |
| Material Type | Extreme Aluminum Oxide |
| Part Number | MJR-12000-1LB |
| Set Name | Single |
| Unit Count | 1.0 Count |
N**O
Tons of abrasive, leaves a great finish
Some mild yellow discoloration, but quality seems to still be there. Tons of abrasive for the price, and it works great as a suspension. No clumping or galling from it not dispersing in use. Particle size does appear to be correct for the 14000 grit I purchased.
E**N
This will get you to shiny!
I got a Lortone dual tumbler for Christmas and a kit of grit to go with it. I wasn’t getting the shine I wanted with the level 4 grit that came with the kit so I looked at reviews for a final stage grit and this one came up. I am not disappointed! This did the trick! I don’t want super shiny, just a shine but this grit can do both, all about the timing. Excellent product, totally recommend!
R**B
Great finishing polish
I will be buying it again
B**E
Extra fine grit
This is the extra fine grit you need for stage 4 or even stage 5 to provide extra polish to your tumbled media. It provide a great shine.
S**W
Perfect choice
Perfect
A**O
Love it!
This polish made my rocks SUPER GLOSSY! Definitely recommend and I will be purchasing again.
C**R
Great company
The best polish. Don't trust the kits on here, you need 8000 and above in final stage to get a good polish. This works really well. Always burnish afterwards to complete the stones.
T**E
BEST GRIT EVER!
GOOD STUFF! Much better than What National Geographic Sells.
P**!
Well packed parcel
Great product great delivery, 100* / 100*
A**M
Amazing shine, better than step 4 in kits
I’m new to rock tumbling and for my first batch used the grits that came with my tumbler. After the full 4 week process I wasn’t happy with the shine, so I sought out a better product for a final polish rather than resorting to mineral oil and faking it. The difference this made with 4 days as a second final polish was amazing, even basalt has come up with a shine. I added a spoonful of baking soda to the barrel with this and there was no fizzing/pressure, and rinsing off was easy and quick. I’ve not tried this as step 4 (rather than adding a second polish as step 5) but will do on my next batch.
T**M
Great stuff
Only if 5 lbs but an yes
C**G
Great finish 🪞
Only used on 1 barrel of “beach rocks” so far but very impressed with the level of polish it provides, used 80-200-600-1200 grits a week at a time then a final polish with this, Much Much better finish than just the “standard” 4 stages of rock tumbling provides.
P**!
A great Polish
A GREAT PRODUCT WHICH DOES WHAT IT SAYS IT WILL DO. 100*/100*
Trustpilot
1 month ago
1 month ago