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✨ Polish Like a Pro, Shine Like a Legend 🎖️
MJR Tumblers offers a premium 3-pound pack of 12,000 grit sub-micron aluminum oxide polishing powder, delivering ultra-fine, professional-grade results that outperform standard 1,200-1,500 grit competitors by 10x. Packaged for convenience and freshness, this product is crafted by a Disabled and Veteran Owned company, making it the top choice for serious rock polishers and hobbyists seeking flawless, mirror-quality finishes.







| ASIN | B0D4PL4512 |
| Best Sellers Rank | #30,016 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #40 in Tumbling Media |
| Brand | MJR Tumblers |
| Brand Name | MJR Tumblers |
| Compatible Material | Aluminum Oxide |
| Customer Reviews | 4.6 out of 5 stars 153 Reviews |
| Grit Material | Extreme Aluminum Oxide |
| Grit Material Type | Extreme Aluminum Oxide |
| Grit Number | 12000 |
| Grit Type | Ultra Fine |
| Item Weight | 3 pounds |
| Manufacturer | MJR Tumblers |
| Material | Extreme Aluminum Oxide |
| Material Type | Extreme Aluminum Oxide |
| Number of Items | 3 |
| Number of Packs | 1 |
| Part Number | MJR-12000-3LB |
| Set Name | MJR Tumblers Extreme Polish Set |
| Unit Count | 1 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!
J**A
This is THE POLISH!
This is THE POLISH for getting that glass smooth finish!!!
L**.
Would buy again.
Great product. Good price.
T**V
Works!
We got some rock tumblers around Christmas and they’ve been running since then. We could never get the polished shine we expected, some of these rocks have been final polished or burnished for weeks without getting them to shine. I decided to give this product a try. It arrived four days ago and I immediately started the problem rocks tumbling in it. I just checked today and they already have a beautiful shine when dry! The grit is pricey, but you cut can cut the cost in half by buying five pounds.
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.
A**O
Love it!
This polish made my rocks SUPER GLOSSY! Definitely recommend and I will be purchasing again.
A**R
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.
A**R
A great Polish
A GREAT PRODUCT WHICH DOES WHAT IT SAYS IT WILL DO. 100*/100*
Trustpilot
2 weeks ago
2 months ago