---
product_id: 99197439
title: "MJR Tumblers Refill Grit Kit w Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. for 6lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned"
brand: "mjr tumblers"
price: "1422663₫"
currency: VND
in_stock: true
reviews_count: 8
category: "Mjr Tumblers"
url: https://www.desertcart.vn/products/99197439-mjr-tumblers-refill-grit-kit-w-premium-quality-extreme-polish
store_origin: VN
region: Vietnam
---

# Premeasured 4-stage silicon carbide grit 12,000 grit sub-micron polish Veteran & Disabled owned USA brand MJR Tumblers Refill Grit Kit w Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. for 6lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned

**Brand:** mjr tumblers
**Price:** 1422663₫
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** MJR Tumblers Refill Grit Kit w Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. for 6lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned by mjr tumblers
- **How much does it cost?** 1422663₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/99197439-mjr-tumblers-refill-grit-kit-w-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

- • **Proudly American Made:** Support a disabled and veteran-owned company based in Pecatonica, Illinois.
- • **Versatile Compatibility:** Perfectly designed for all 6lb rotary and vibratory rock tumblers.
- • **Expert Guidance Included:** Detailed, easy-to-follow instructions with insider tips to maximize your tumbling success.
- • **Effortless 4-Stage System:** Premeasured grits for each tumbling stage—just pour and roll, no guesswork needed.
- • **Unmatched Polish Precision:** Experience the ultimate 12,000 grit sub-micron aluminum oxide polish for mirror-like rock finishes.

## Overview

MJR Tumblers Refill Grit Kit delivers a premium 4-stage silicon carbide grit system topped with an exclusive 12,000 grit sub-micron aluminum oxide polish, engineered for flawless rock tumbling results. Designed for 6lb barrels, this veteran and disabled-owned American brand offers premeasured convenience and expert instructions, making it the go-to choice for hobbyists and educators seeking professional-grade polish with zero hassle.

## Description

Buy MJR Tumblers Refill Grit Kit w Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. for 6lb 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 6lb kit contains the following: 6oz of course 60/90 silicon carbide grit, 6oz of fine 120/220 silicon carbide grit, 3oz of pre polish 400/600 silicon carbide grit, 3oz 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 | B07F1FCPZH |
| Age Range Description | 7 to 100 |
| Best Sellers Rank | #88,907 in Toys & Games ( See Top 100 in Toys & Games ) #26 in Kids' Rock Tumblers |
| Brand Name | MJR Tumblers |
| Customer Reviews | 4.5 out of 5 stars 1,185 Reviews |
| Educational Objective | Teach children about geology and the process of tumbling and polishing rocks |
| Item Weight | 18 Ounces |
| Manufacturer | MJR Tumblers |
| Manufacturer Maximum Age (MONTHS) | 120 |
| Manufacturer Minimum Age (MONTHS) | 8.0 |
| Material Type | Aluminum Oxide, Plastic Pellets, Silicon Carbide |
| Operation Mode | Manual |
| Power Source | Hand-powered |
| Size | for 6lb barrel |
| Supported Battery Types | No batteries required |
| Unit Count | 1.0 Count |

## Images

![MJR Tumblers Refill Grit Kit w Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. for 6lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned - Image 1](https://m.media-amazon.com/images/I/61aeQRPy1vL.jpg)

## 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.

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-01-28*