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✨ Unleash Your Inner Geologist with MJR Tumblers!
The MJR Tumblers Refill Grit Kit is designed for 3 LB rock tumblers, featuring a comprehensive set of grits and polish to ensure your rocks shine like never before. With a total of 3 ounces of graded Silicon Carbide Grit and 1.5 ounces of Aluminum Oxide Polish, this kit is perfect for both beginners and seasoned enthusiasts. Lightweight and easy to use, it’s the ideal companion for anyone looking to elevate their rock tumbling game.







| ASIN | B07DZ54NQN |
| Best Sellers Rank | 115,866 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 70 in Tumbling Media |
| Brand | MJR Tumblers |
| Compatible Material | Stone |
| Customer Reviews | 4.3 4.3 out of 5 stars (460) |
| Grit Material Type | Aluminium Oxide, Carbide, Silicon Carbide |
| Grit Number | 12000 |
| Grit Type | Coarse |
| Item Dimensions | 20.3 x 15.2 x 1 centimetres |
| Item Weight | 0.56 Pounds |
| Manufacturer | MJR Tumblers |
| Manufacturer Part Number | MJR3pgk |
| Material | Aluminum Oxide Silicon Carbide Plastic Pellets |
| Model Number | MJR3pgk |
| Number of Items | 4 |
| Set Name | True |
T**N
After 11 days, I received the grit! Polishes rocks nicely!
S**D
Buyer Beware! Read the small print on the size. This is a shockingly small amount of grit for the price. You might get 2 tumbles......maybe. I've paid less than this for 4 times the amount and just as good. Very misleading and sneaky.
J**F
what a rip. the other reviews don't lie, this is an even smaller amount of grit than you're imagining. it's like a sample kit. photos of my scale are attached (and measurements include the plastic bag.) i've only used level 1 but it was less than 3 tablespoons. for a 3-lb tumbler it's half of what i needed for a single batch. there's a reason a lot of sellers don't put the weights on the packaging.
B**P
Very little grit. Second stage only had about 3tbsp worth. The images are very misleading.
K**A
This grit and polish set is exceptional. You can tell it was crafted by people who genuinely care — not just about rocks, but about the process and purpose. This company emanates expertise and enthusiasm, and that shows in the results. My rocks came out more beautiful than ever and I would prefer to buy only from these rock guys. The picture is of some rocks from my apartment landscaping after the process . The instructions are detailed but easy to follow. It’s not your typical instruction manual, rather a sincere document created by the seller from the heart (their tips and tricks included!). It’s really unique and special. I’ve been using a “gimmicky” tumbler set for my HS STEM program and at home with my kids. As a teacher, is a great tool for many lessons and even many subjects.
Trustpilot
2 weeks ago
3 weeks ago