---
product_id: 218138850
title: "Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 10lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned"
brand: "mjr tumblers"
price: "€ 51.68"
currency: EUR
in_stock: true
reviews_count: 8
category: "Mjr Tumblers"
url: https://www.desertcart.gr/products/218138850-refill-grit-kit-w-mjr-tumblers-premium-quality-extreme-polish
store_origin: GR
region: Greece
---

# 4-stage premeasured silicon carbide grit 12,000 grit sub-micron polish Proud Disabled & Veteran Owned USA brand Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 10lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned

**Brand:** mjr tumblers
**Price:** € 51.68
**Availability:** ✅ In Stock

## Summary

> ✨ Polish Like a Pro, Rock Your World! 🪨

## Quick Answers

- **What is this?** Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 10lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned by mjr tumblers
- **How much does it cost?** € 51.68 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/218138850-refill-grit-kit-w-mjr-tumblers-premium-quality-extreme-polish)

## Best For

- mjr tumblers enthusiasts

## Why This Product

- Trusted mjr tumblers brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Convenience:** Simply pour the premeasured grits into your 10lb tumbler and watch your stones transform—no guesswork, no mess.
- • **Expert Guidance Included:** Detailed, heartfelt instructions with pro tips ensure even beginners achieve professional-grade results every time.
- • **Unmatched Ultra-Fine Polish:** Experience the pinnacle of rock tumbling with our exclusive 12,000 grit aluminum oxide polish delivering mirror-like finishes.
- • **Effortless 4-Stage Precision:** Premeasured silicon carbide grits for coarse, fine, and pre-polish stages make your tumbling process foolproof and time-saving.
- • **Made in the USA with Purpose:** Support a Disabled and Veteran Owned company that crafts every kit with passion and American pride.

## Overview

The MJR Tumblers Refill Grit Kit is a premium 4-stage rock tumbling grit set featuring an exclusive 12,000 grit sub-micron aluminum oxide polish for unparalleled shine. Designed for 10lb rotary or vibratory tumblers, it includes premeasured silicon carbide grits for coarse to pre-polish stages, ensuring consistent, professional results. Proudly made in the USA by a Disabled and Veteran Owned company, this kit comes with expert instructions and tips, making it the go-to choice for hobbyists and educators seeking flawless rock polishing.

## Description

Buy Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 10lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned: Rock Tumblers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: This is TRUE GRIT! - This is simply some of the best quality tumbler grit I have used. If you do the first three stages properly, then the 12,000 girt polish will be perfect. All in all this is good, works well in each stage, easy to use. the only thing that might make it better would be to package it in bottles instead of bags, but honestly, that's about it.
Review: Passion-fueled and high quality - 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.

## Features

- Extreme Polish! Every rock tumbling kit from MJR Tumblers comes with our Exclusive 12,000 Grit Sub Micron Extreme Aluminum Oxide Polish! No other polish even comes close to our results. If you want the best, MJR Tumblers 12,000 Grit Aluminum Oxide Extreme Polish is what you need!
- MJR Tumblers is a Disabled and Veteran Owned Company!
- Premeasured and works with all rotary and vibratory tumblers. All 4 Stages are premeasured for your tumbler, just pour and roll! It Can’t get easier than that!
- Each 10lb kit contains the following: 10oz of course 60/90 silicon carbide grit, 10oz of fine 120/220 silicon carbide grit, 5oz of pre polish 400/600 silicon carbide grit, 5oz of MJR Tumblers Exclusive 12,000 grit Extreme Aluminum Oxide Polish
- MJR Tumblers is Proud to be an American company located in Pecatonica Illinois in the good ole USA!
- Includes easy to understand rock polishing instructions with lots of tips and tricks with every purchase from MJR Tumblers!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07FHLKRY1 |
| Age Range Description | 7 to 100 |
| Best Sellers Rank | #11,508 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #11 in Tumbling Media |
| Brand Name | MJR Tumblers |
| Customer Reviews | 4.4 out of 5 stars 1,188 Reviews |
| Educational Objective | Team Building Skills |
| Item Weight | 30 Ounces |
| Manufacturer | MJR Tumblers |
| Manufacturer Maximum Age (MONTHS) | 100 |
| Manufacturer Minimum Age (MONTHS) | 8.0 |
| Material Type | Aluminum Oxide, Plastic Pellets, Silicon Carbide |
| Operation Mode | Manual |
| Power Source | manual |
| Size | for 10lb barrel |
| Supported Battery Types | No batteries required |

## Images

![Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 10lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned - Image 1](https://m.media-amazon.com/images/I/612EmMWHNKL.jpg)
![Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 10lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned - Image 2](https://m.media-amazon.com/images/I/61aeQRPy1vL.jpg)
![Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 10lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned - Image 3](https://m.media-amazon.com/images/I/61mhoieNFpL.jpg)
![Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 10lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned - Image 4](https://m.media-amazon.com/images/I/71ENSH8w-mL.jpg)
![Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 10lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned - Image 5](https://m.media-amazon.com/images/I/71SVNiXuCwL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ This is TRUE GRIT!
*by J***E on December 15, 2025*

This is simply some of the best quality tumbler grit I have used. If you do the first three stages properly, then the 12,000 girt polish will be perfect. All in all this is good, works well in each stage, easy to use. the only thing that might make it better would be to package it in bottles instead of bags, but honestly, that's about it.

### ⭐⭐⭐⭐⭐ Passion-fueled and high quality
*by K***A on July 11, 2025*

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.

### ⭐⭐⭐⭐⭐ MAKES TUMBLING ROCKS SO MUCH EASIER
*by A***P on September 3, 2025*

This grit works just like all others, if used correctly. It is so easy to open and pour it into tumbler--the perfect amount for a 10-lb tumbler. Highly recommended.

## Frequently Bought Together

- Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 10lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned
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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-01-28*