---
product_id: 60566033
title: "4 Lb. 20/40 Fine Walnut Shell Tumbler Tumbling Media Untreated"
brand: "algrium"
price: "₩142758"
currency: KRW
in_stock: true
url: https://www.desertcart.kr/products/60566033-4-lb-20-40-fine-walnut-shell-tumbler-tumbling-media
store_origin: KR
region: South Korea
---

# Biodegradable Reusable Multi-compatible 4 Lb. 20/40 Fine Walnut Shell Tumbler Tumbling Media Untreated

**Brand:** algrium
**Price:** ₩142758
**Availability:** ✅ In Stock

## Summary

> 🌟 Elevate Your Brass Game with Nature's Touch!

## Quick Answers

- **What is this?** 4 Lb. 20/40 Fine Walnut Shell Tumbler Tumbling Media Untreated by algrium
- **How much does it cost?** ₩142758 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/60566033-4-lb-20-40-fine-walnut-shell-tumbler-tumbling-media)

## Best For

- algrium enthusiasts

## Why This Product

- Trusted algrium brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dual Purpose:** Ideal for both brass cleaning and reptile terrariums.
- • **Versatile Use:** Perfect for both rotary and vibratory tumblers.
- • **Soft Yet Tough:** Gentle on surfaces while effectively removing tarnish.
- • **Eco-Friendly Choice:** Biodegradable media that cares for the planet.
- • **Enhanced Efficiency:** Reduces cycle time for faster finishing operations.

## Overview

This 4 lb. bag of 20/40 fine walnut shell tumbler media is an eco-friendly, biodegradable abrasive designed for effective cleaning of brass casings and creating natural habitats for reptiles. Its durable, non-abrasive properties make it perfect for both rotary and vibratory tumblers, ensuring a gentle yet thorough finish.

## Description

"Note: Coin in picture not included, for scale purposes only." *Manufacture: Manufactured in USA

## Features

- Walnut shell grit is the hard-fibrous product made from crushed or milled walnut shells. The walnut shell grit is Biodegradable, multi-faceted, angular and extremely durable. Yet the Walnut shell grit is considered a soft abrasive. A relatively soft nut shell abrasive for removal of undesirable coatings without etching, scratching, or marring surfaces.
- If you have brass that has not been cleaned after several reloads, or you have some range pickings that are severely discolored from sitting on the ground for a long period of time, the more popular media to use is crushed walnut shell media. Walnut shell media is a more aggressive media than corncob and for that reason it is best used on heavily tarnished brass casings.
- Treated walnut media can be used if you are going for a bright polish on your brass, you can add your own polish to untreated walnut shell media. Walnut shell media will work in both rotary and vibratory tumblers. However, vibratory tumblers get the best results from walnut media. I also carry Red Rouge Polishing Powder to help brighten your brass casings.
- The pellets are tough, possess high strength and resist break down, but are non-abrasive in character. * Excellent reuse, low dust, and usable in all types of blast equipment. * Excellent media for tumbling and vibratory operations. * Reduces cycle time of finishing operations. For best results replaced periodically for best performance.
- Also used for Reptile Terrariums *Creates a natural and attractive desert environment. *Excellent heat conductor. *Stimulates natural digging and burrowing behavior.

## Product Details

- **Material:** Walnut
- **Grit Material:** Walnut
- **Brand:** Algrium
- **Grit Type:** Fine
- **Compatible Material:** Glass

## Images

![4 Lb. 20/40 Fine Walnut Shell Tumbler Tumbling Media Untreated - Image 1](https://m.media-amazon.com/images/I/91oExwS+vkL.jpg)
![4 Lb. 20/40 Fine Walnut Shell Tumbler Tumbling Media Untreated - Image 2](https://m.media-amazon.com/images/I/91ECBBC3k6L.jpg)
![4 Lb. 20/40 Fine Walnut Shell Tumbler Tumbling Media Untreated - Image 3](https://m.media-amazon.com/images/I/91ECBBC3k6L.jpg)

## Questions & Answers

**Q: I am planning on using walnut media for putting on the final fine polish on rocks in a vibratory tumbler.  Is this done dry or is water added?**
A: I don't know anyone who has tried Walnut Tumbling Media as a final polish for rocks. Usually people will use 1200 to 1500 grit aluminium oxide or silicon carbide polishing powder with the rock, along with no abrasive tumbling media as a carrier for the grit. 

But if you want to try Walnut media it can be used wet or dry.

## Frequently Bought Together

- 4 Lb. 20/40 Fine Walnut Shell Tumbler Tumbling Media Untreated
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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-25*