---
product_id: 220084043
title: "Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 30lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned"
brand: "mjr tumblers"
price: "¥16491"
currency: JPY
in_stock: true
category: "Mjr Tumblers"
url: https://www.desertcart.jp/products/220084043-refill-grit-kit-w-mjr-tumblers-premium-quality-extreme-polish
store_origin: JP
region: Japan
---

# Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 30lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned

**Brand:** mjr tumblers
**Price:** ¥16491
**Availability:** ✅ In Stock

## 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 30lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned by mjr tumblers
- **How much does it cost?** ¥16491 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/220084043-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

## Description

Buy Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 30lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned: Rock Tumblers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## 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 30lb kit contains the following: 30oz of course 60/90 silicon carbide grit, 30oz of fine 120/220 silicon carbide grit, 15oz of pre polish 400/600 silicon carbide grit, 15oz 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!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07F6TK3YF |
| Age Range Description | Kid |
| Best Sellers Rank | #45,919 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #43 in Tumbling Media |
| Brand Name | MJR Tumblers |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,313) |
| Educational Objective | Learn about geology, mineralogy, and the science of rock polishing through hands-on tumbling abrasive processes |
| Indoor Outdoor Usage | Indoor |
| Item Weight | 5.6 pounds |
| Manufacturer | MJR Tumblers |
| Manufacturer Part Number | MJR30pgk |
| Manufacturer recommended age | 12 - 12 months |
| Material Type | Aluminum Oxide, Plastic Pellets, Silicon Carbide |
| Number of Packs | 4 |
| Operation Mode | Manual |
| Set Name | MJR Tumblers Refill Grit Kit |
| Size | for 30lb barrel |
| Theme | Nature" # or "Geology |

## Images

![Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 30lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned - Image 1](https://m.media-amazon.com/images/I/61aeQRPy1vL.jpg)

## Available Options

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

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**Shop now:** [https://www.desertcart.jp/products/220084043-refill-grit-kit-w-mjr-tumblers-premium-quality-extreme-polish](https://www.desertcart.jp/products/220084043-refill-grit-kit-w-mjr-tumblers-premium-quality-extreme-polish)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-10-01*