---
product_id: 500431768
title: "MJR Tumblers Refill Grit Kit for 15 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish"
brand: "mjr tumblers"
price: "€ 275.52"
currency: EUR
in_stock: true
reviews_count: 5
category: "Mjr Tumblers"
url: https://www.desertcart.hr/products/500431768-mjr-tumblers-refill-grit-kit-for-15-lb-rock-tumblers
store_origin: HR
region: Croatia
---

# Universal tumbler compatibility 7-day polish cycle 4-stage grit system MJR Tumblers Refill Grit Kit for 15 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish

**Brand:** mjr tumblers
**Price:** € 275.52
**Availability:** ✅ In Stock

## Summary

> 💎 Elevate your rock game—because your gems deserve the spotlight!

## Quick Answers

- **What is this?** MJR Tumblers Refill Grit Kit for 15 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish by mjr tumblers
- **How much does it cost?** € 275.52 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/500431768-mjr-tumblers-refill-grit-kit-for-15-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

- • **Long-Lasting Sharpness:** Silicon Carbide grit stays harder and sharper longer for unbeatable results.
- • **Precision 4-Stage Grit Kit:** From coarse Silicon Carbide to fine Aluminum Oxide for flawless polishing.
- • **Universal Fit for Any Tumbler:** Compatible with all brands, giving you ultimate flexibility.
- • **Effortless Rock Transformation:** Achieve showroom shine in just 7 days with premium-grade media.
- • **Quiet & Durable Tumble Experience:** Runs 75% quieter with leak-resistant barrel and heavy-duty steel frame.

## Overview

The MJR Tumblers Refill Grit Kit is a professional-grade 4-stage polishing media set designed for 15 LB rock tumblers. Featuring Silicon Carbide for coarse to pre-polish stages and Aluminum Oxide for fine polishing, it delivers superior, long-lasting sharpness and compatibility with any tumbler brand. Engineered for efficiency and quiet operation, this kit ensures your gemstones achieve a brilliant, showroom-quality shine in just one week.

## Description

MJR Tumblers Refill Grit Kit for 15 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish : desertcart.co.uk: Home & Kitchen

Review: I'm new to rock tumbling, I've used a few different polishing grits and this is the best one so far. I ran this polish cycle for 7 days and am happy with the results.
Review: 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.

## 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 |
|---------------|-------|
| ASIN | B07F3Q72YD |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 245,626 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 125 in Tumbling Media |
| Colour | Green |
| Customer Reviews | 4.4 4.4 out of 5 stars (258) |
| Date First Available | 6 Nov. 2022 |
| Item model number | MJR15pgk |
| Material Type(s) | Aluminium Oxide, Silicon Carbide |
| Product Dimensions | 20.32 x 15.24 x 3.81 cm; 1.45 kg |

## Product Details

- **Brand:** MJR Tumblers
- **Grit material:** Aluminium Oxide
- **Grit type:** Coarse
- **Item dimensions L x W x H:** 20.3 x 15.2 x 3.8 centimetres
- **Material:** Aluminium Oxide, Silicon Carbide

## Images

![MJR Tumblers Refill Grit Kit for 15 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 1](https://m.media-amazon.com/images/I/51eysBrID7L.jpg)
![MJR Tumblers Refill Grit Kit for 15 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 2](https://m.media-amazon.com/images/I/612EmMWHNKL.jpg)
![MJR Tumblers Refill Grit Kit for 15 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 3](https://m.media-amazon.com/images/I/61POizUUQzL.jpg)
![MJR Tumblers Refill Grit Kit for 15 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 4](https://m.media-amazon.com/images/I/61aeQRPy1vL.jpg)
![MJR Tumblers Refill Grit Kit for 15 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 5](https://m.media-amazon.com/images/I/61mhoieNFpL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***Y on 27 August 2024*

I'm new to rock tumbling, I've used a few different polishing grits and this is the best one so far. I ran this polish cycle for 7 days and am happy with the results.

### ⭐⭐⭐⭐⭐ Review
*by J***E on 15 December 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.

### ⭐⭐⭐⭐ Review
*by C***M on 29 March 2024*

Kind of annoyed that they don't have the nice labels as shown in the photos, would have made it easy to keep separated. Instead there's these small clear labels on the bags that you have to find.... That's basically half star off instead of a full star.... Fortunately, identifying the grits by sight looks like it should be fairly easy, especially the 12,000 grit AO polish powder - wish that was available on its own.... but I did find a diamond powder / polish mix alternative that might work at a similar cost per pound. Would have been real nice if the description was a little more clear in what you get.... i.e. 3lb media for 15lbs of rocks... which is the other half star off.... I was looking at a 7.2lb of media kit for about the same price only it had the 1500grit AO polishing powder.

## Frequently Bought Together

- MJR Tumblers Refill Grit Kit for 15 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish
- Hiceeden 8 Pounds Rock Tumbling Filler Media, 1/5" x 2/5" Reusable Cylinder Ceramic Pellets Non-Abrasive for Rock Tumbler, Stone Polisher
- 8 LBS 3/16" X 3/8" Rock Tumbling Ceramic Filler Media Non-Abrasive Ceramic Pellets for All Type Tumblers

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-04*