---
product_id: 715348367
title: "MJR Tumblers Refill Grit Kit for 20 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish"
brand: "mjr tumblers"
price: "R$1266"
currency: BRL
in_stock: true
url: https://www.desertcart.com.br/products/715348367-mjr-tumblers-refill-grit-kit-for-20-lb-rock-tumblers
store_origin: BR
region: Brazil
---

# 75% quieter operation fast stock removal 4-stage grit system MJR Tumblers Refill Grit Kit for 20 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish

**Brand:** mjr tumblers
**Price:** R$1266
**Availability:** ✅ In Stock

## Summary

> 💎 Elevate your rock game—shine brighter, faster, quieter!

## Quick Answers

- **What is this?** MJR Tumblers Refill Grit Kit for 20 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish by mjr tumblers
- **How much does it cost?** R$1266 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/715348367-mjr-tumblers-refill-grit-kit-for-20-lb-rock-tumblers)

## 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

- • **Speed Meets Quality:** Superior-grade green Silicon Carbide cuts faster and stays sharper longer for rapid, professional results.
- • **Whisper-Quiet Tumbling:** Engineered with a leak-resistant rubber barrel and heavy-duty frame for 75% less noise during operation.
- • **Universal Compatibility:** Designed to work seamlessly with any 20 LB rock tumbler brand—freedom to choose your gear.
- • **Precision 4-Stage Grit Kit:** From coarse Silicon Carbide to fine Aluminum Oxide polish, achieve flawless gemstone finishes every time.
- • **Complete Polishing Experience:** Includes free step-by-step polishing instructions and a full range of grit sizes for all your tumbling needs.

## Overview

The MJR Tumblers Refill Grit Kit is a professional-grade 4-step polishing system featuring coarse to fine Silicon Carbide and Aluminum Oxide grits. Designed for 20 LB rock tumblers, it delivers fast stock removal and a brilliant finish with superior green Silicon Carbide that stays sharper longer. Compatible with any tumbler brand, it ensures a quiet, efficient tumbling experience with a durable, leak-resistant barrel and heavy-duty frame.

## Description

MJR Tumblers Refill Grit Kit for 20 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish

## Features

- COARSE, FINE, PRE-POLISH, AND POLISH KIT: Get the ideal results with this professionally-graded kit, starting from coarse Silicon Carbide Grit for quick stock removal to a finer Aluminum Oxide Polish Grit for a perfect finish. Get the job done quickly without compromising quality. A comprehensive kit that offers everything you need for sharpening and polishing.
- QUICK WAY TO MAKE ROCKS SHINE: Get ready to bring your gemstones to life with our rock polisher grit refill pack. Achieve the ultimate shine with our superior-grade Silicon Carbide from Coarse to Pre-polish and Aluminum Oxide for a Finer Polish. Refill your rock polisher with our high-quality grit, enough to give your rocks and gems the sparkle they deserve. Our premium-grade silicon carbide is harder and stays sharper longer, giving you an unbeatable polishing experience.
- POLISH INCREDIBLE ROCKS WITH MJR TUMBLERS: You'll have plenty of tumbling to do with MJR Tumblers. We offer a large selection of heavy-duty tumblers, a full range of silicon carbide grit (50, 80, 60/90, 500, 600, 500/600 and 1500), and aluminum oxide (400/600, 1200, and 1500). These can be purchased individually in a weight denomination that best fits your needs, we also have pre-made kits for your specific size tumbler. We also have kits available with or without plastic pellets.
- WORKS WITH ANY ROCK TUMBLER: No need to worry about compatibility. Our grit is designed to work with any rock tumbler from any brand, giving you the freedom of choice. Get smooth, polished rocks in no time without compromising on quality or performance!
- EASY TUMBLE EXPERIENCE: MJR Tumblers runs on a powerful motor with a leak-resistant rubber barrel that reduces sound, making it 75% quieter than other plastic models, and made to last a long time. Heavy-duty 16-gauge welded steel frame, powder coated. Equipped with heavy-duty stainless steel ball bearings. It also has a quick and easy-to-use heavy-duty rubber cap. Just Pour in the rough stones and grit, then let the machine do its job!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Package Dimensions | 22.2 x 17.91 x 5.99 cm; 1.7 kg |
| Manufacturer recommended age | 8 months and up |
| Manufacturer reference | MJR20pgk |
| Educational Objective(s) | Foster creativity and understanding of geological processes through hands-on activity |
| Assembly Required | No |
| Batteries Required? | No |
| Batteries included? | No |
| tech_spec_battery_description_toys | No batteries required |
| Material Type(s) | Aluminum Oxide Silicon Carbide |
| ASIN | B07F6YBMZC |

## Images

![MJR Tumblers Refill Grit Kit for 20 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 1](https://m.media-amazon.com/images/I/61aeQRPy1vL.jpg)
![MJR Tumblers Refill Grit Kit for 20 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 2](https://m.media-amazon.com/images/I/71SVNiXuCwL.jpg)
![MJR Tumblers Refill Grit Kit for 20 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 3](https://m.media-amazon.com/images/I/71ENSH8w-mL.jpg)
![MJR Tumblers Refill Grit Kit for 20 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 4](https://m.media-amazon.com/images/I/61mhoieNFpL.jpg)
![MJR Tumblers Refill Grit Kit for 20 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 5](https://m.media-amazon.com/images/I/71u-VNXNY6L.jpg)

## Available Options

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

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**Shop now:** [https://www.desertcart.com.br/products/715348367-mjr-tumblers-refill-grit-kit-for-20-lb-rock-tumblers](https://www.desertcart.com.br/products/715348367-mjr-tumblers-refill-grit-kit-for-20-lb-rock-tumblers)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-01-31*