---
product_id: 318896364
title: "Refill Grit Kit for 3 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish"
brand: "mjr tumblers"
price: "¥9678"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/318896364-refill-grit-kit-for-3-lb-rock-tumblers-silicon-carbide
store_origin: JP
region: Japan
---

# High-grade aluminum oxide polish Exact graded silicon carbide sizes 4-step precision grit system Refill Grit Kit for 3 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish

**Brand:** mjr tumblers
**Price:** ¥9678
**Availability:** ✅ In Stock

## Summary

> ✨ Elevate your rock tumbling game with precision grit power! ⚙️

## Quick Answers

- **What is this?** Refill Grit Kit for 3 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish by mjr tumblers
- **How much does it cost?** ¥9678 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/318896364-refill-grit-kit-for-3-lb-rock-tumblers-silicon-carbide)

## 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

- • **Ready to Use Refill Kit:** No batteries, no fuss—just pure polishing power
- • **Precision Multi-Stage Grits:** Four distinct grit grades for flawless rock tumbling
- • **Premium Aluminum Oxide Polish:** 1200 grit polish for a brilliant, showroom shine
- • **Optimized Silicon Carbide Blend:** 60/90, 120/220, and 500/600 grits for progressive smoothing
- • **Perfectly Sized for 3 LB Tumblers:** Tailored quantities ensure ideal media-to-rock ratio

## Overview

This Refill Grit Kit is engineered for 3 LB rock tumblers, featuring a four-step silicon carbide and aluminum oxide polishing system. It includes precise quantities of graded grit media—3 oz of 60/90 and 120/220 silicon carbide, 1.5 oz of 500/600 silicon carbide, and 1.5 oz of 1200 aluminum oxide polish—designed to deliver professional-grade rock smoothing and polishing results every time.

## Description

Refill Grit Kit for 3 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish

## Features

- 3 ounces of 60/90 Graded Silicon Carbide Grit (Step 1)
- 3 ounces of 120/220 Graded Silicon Carbide Grit (Step 2)
- 1.5 ounces of 500/600 Graded Silicon Carbide Grit (Step 3)
- 1.5 ounces of 1200 Aluminum Oxide Polish (Step 4)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Dimensions | 20.32 x 15.24 x 1.02 cm; 254.01 g |
| Manufacturer recommended age | 8 months and up |
| Item model number | MJR3pgk |
| Batteries Required? | No |
| Batteries Included? | No |
| Material Type(s) | Aluminum Oxide Silicon Carbide Plastic Pellets |
| Color | Green |
| ASIN | B07DZ54NQN |

## Product Details

- **Material:** Aluminum Oxide Silicon Carbide Plastic Pellets
- **Grit material:** Aluminum Oxide
- **Item dimensions L x W x H:** 20.3 x 15.2 x 1 centimeters
- **Brand:** MJR Tumblers
- **Grit type:** Coarse

## Images

![Refill Grit Kit for 3 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 1](https://m.media-amazon.com/images/I/61aeQRPy1vL.jpg)

## Available Options

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

## Questions & Answers

**Q: Can you use this for a 1 lb National Geographic tumbler**
A: It should work just fine. This is just the grit and the grit is usable in any tumbler.

**Q: Can this grit be used for grinding and polishing rock thin sections?**
A: i would think so

**Q: After the polish, are the rocks glossy and shiny?**
A: They won't be as shiny as you think.  The grit polish the rocks so try are smooth but there is a fifth stage in rock polishing called burnishing that you have to do at the end.  Search the internet on directions but it involves tumbling them in soap like borax. Also, if you want your rocks to look good you have to get the ceramic filler pellets to even out the tumbles.  Plastic doesn't do the trick like ceramic.  Filler pellets vs no filler pellets is a big difference on helping the rocks get shiny.

## Frequently Bought Together

- Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Results. For 3lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned
- UU UNIHOM 3 lbs Bulk Rough Madagascar Stones Mix Large 1" Natural Raw Stones Crystal for Tumbling, Cabbing, Fountain Rocks, Decoration,Polishing, Wire Wrapping, Wicca Reiki Crystal Healing
- FORBY 3 lbs Bulk Rough Madagascar Stones Mix - Large 1" Natural Raw Stones Crystal for Tumbling, Cabbing, Fountain Rocks, Decoration,Polishing, Wire Wrapping, Wicca & Reiki Crystal Healing

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**Shop now:** [https://www.desertcart.jp/products/318896364-refill-grit-kit-for-3-lb-rock-tumblers-silicon-carbide](https://www.desertcart.jp/products/318896364-refill-grit-kit-for-3-lb-rock-tumblers-silicon-carbide)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-08*