---
product_id: 433785548
title: "Polly Plastics Rock Tumbler Grit and Polish Refill Media Kit | 4-Steps Supplies for Tumbling and Polishing Stones | Professionals Adults and Kids | Polish 20lbs of Rocks (Bulk Stage 1 Refill)"
brand: "polly plastics"
price: "$248"
currency: NZD
in_stock: true
reviews_count: 13
category: "Polly Plastics"
url: https://www.desertcart.nz/products/433785548-polly-plastics-rock-tumbler-grit-and-polish-refill-media-kit
store_origin: NZ
region: New Zealand
---

# Universal compatibility with all rock tumblers 6 lb. Medium 180/220 Silicon Carbide Grit Made in USA with premium sourced materials Polly Plastics Rock Tumbler Grit and Polish Refill Media Kit | 4-Steps Supplies for Tumbling and Polishing Stones | Professionals Adults and Kids | Polish 20lbs of Rocks (Bulk Stage 1 Refill)

**Brand:** polly plastics
**Price:** $248
**Availability:** ✅ In Stock

## Summary

> 💎 Elevate your rock tumbling game with pro-grade grit that delivers sparkle and smoothness!

## Quick Answers

- **What is this?** Polly Plastics Rock Tumbler Grit and Polish Refill Media Kit | 4-Steps Supplies for Tumbling and Polishing Stones | Professionals Adults and Kids | Polish 20lbs of Rocks (Bulk Stage 1 Refill) by polly plastics
- **How much does it cost?** $248 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/433785548-polly-plastics-rock-tumbler-grit-and-polish-refill-media-kit)

## Best For

- polly plastics enthusiasts

## Why This Product

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

## Key Features

- • **Precision Stage 2 Grit:** Medium 180/220 silicon carbide for flawless smoothing and shaping
- • **Mess-Free Reusable Jars:** Durable packaging designed to prevent spills and store grit safely
- • **Trusted American Quality:** Crafted in the USA with strict quality control for consistent results
- • **Beginner Friendly & Guaranteed:** Perfect for pros and rookies alike with 100% satisfaction promise
- • **Universal Tumbler Compatibility:** Works seamlessly with Elenco, Lortone, National Geographic & more

## Overview

Polly Plastics Rock Tumbler Media Grit Refill offers 6 pounds of medium 180/220 silicon carbide grit, designed as Stage 2 in a 4-step tumbling process. Compatible with all major rock tumblers, it comes in reusable, spill-proof jars and is proudly made in the USA, ensuring premium quality and beginner-friendly performance for transforming rough stones into polished gems.

## Description

Polly Plastics Rock Tumbler Grit and Polish Refill Media Kit | 4-Steps Supplies for Tumbling and Polishing Stones | Professionals Adults and Kids | Polish 20lbs of Rocks (Bulk Stage 1 Refill): desertcart.com: Industrial & Scientific

Review: Does a good job, touching up knives! - Quality stuff, delivery was fast !
Review: Pure Aluminum Oxide - Better than other brands - I get an excellent polish with this 1200 grit. Rocks come out way shinier than when using other polish brands. For instance the Rockshed 1000 grit results in dull rocks in comparison. The Rockshed grit color is gray and under a high powered microscope you can see contamination, black particles, which make the overall color of the grit gray. Aluminum oxide, with high purity, should be white.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09L5JNY2G |
| Best Sellers Rank | #13,129 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #11 in Tumbling Media |
| Brand | Polly Plastics |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,484) |
| Grit Material | Silicon Carbide |
| Grit Number | 1200 |
| Grit Type | Coarse |
| Item Weight | 6.5 pounds |
| Item dimensions L x W x H | 7.2 x 3.4 x 4.4 inches |
| Manufacturer | Polly Plastics |
| Material | Silicone |
| Product Dimensions | 7.2 x 3.4 x 4.4 inches |
| Set Name | 4-Step |

## Product Details

- **Brand:** Polly Plastics
- **Grit Material:** Silicon Carbide
- **Grit Type:** Coarse
- **Item dimensions L x W x H:** 7.2 x 3.4 x 4.4 inches
- **Material:** Silicone

## Images

![Polly Plastics Rock Tumbler Grit and Polish Refill Media Kit | 4-Steps Supplies for Tumbling and Polishing Stones | Professionals Adults and Kids | Polish 20lbs of Rocks (Bulk Stage 1 Refill) - Image 1](https://m.media-amazon.com/images/I/81bCAEOAOAL.jpg)
![Polly Plastics Rock Tumbler Grit and Polish Refill Media Kit | 4-Steps Supplies for Tumbling and Polishing Stones | Professionals Adults and Kids | Polish 20lbs of Rocks (Bulk Stage 1 Refill) - Image 2](https://m.media-amazon.com/images/I/8112bZ8uROL.jpg)
![Polly Plastics Rock Tumbler Grit and Polish Refill Media Kit | 4-Steps Supplies for Tumbling and Polishing Stones | Professionals Adults and Kids | Polish 20lbs of Rocks (Bulk Stage 1 Refill) - Image 3](https://m.media-amazon.com/images/I/71Tj3v+umtL.jpg)
![Polly Plastics Rock Tumbler Grit and Polish Refill Media Kit | 4-Steps Supplies for Tumbling and Polishing Stones | Professionals Adults and Kids | Polish 20lbs of Rocks (Bulk Stage 1 Refill) - Image 4](https://m.media-amazon.com/images/I/71dGHhAd-DL.jpg)
![Polly Plastics Rock Tumbler Grit and Polish Refill Media Kit | 4-Steps Supplies for Tumbling and Polishing Stones | Professionals Adults and Kids | Polish 20lbs of Rocks (Bulk Stage 1 Refill) - Image 5](https://m.media-amazon.com/images/I/81J02afB2kL.jpg)

## Available Options

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

## Questions & Answers

**Q: how much do you put in a 1 lb Tumbler barrel?**
A: You would add 2 tablespoons per lb. of rock for both Stages 1 and Stage 2 (that is shown).  Steps 3 and 4 will require 1 tablespoon per lb. of rock.

**Q: Is this good for etching glass? Has anyone tried it on glass?**
A: Yes, it will work for tumbling glass.  Using Step 2 will give a matte finish.  Tumbler for a couple of days and check if are happy with the finish.  You may have to tumble a couple more days to get the effect you like.  To get a more clear look, continue with Step 3 grit (500 grit) and then possibly on to Step 4 (aluminum oxide).

**Q: Is it 6 table spoons of grit for 3 pouns of rock? The video doesn't show them putting that amount in**
A: Yes. We recommend 2 tbs per lb of rock for steps 1 and 2. 1 tbs per lb of rock for step 3 and then 1.5 tbs per lb of rock for step 4.

**Q: can this be used in a sandblaster?**
A: YES

## Customer Reviews

### ⭐⭐⭐⭐⭐ Does a good job, touching up knives!
*by M***D on February 8, 2026*

Quality stuff, delivery was fast !

### ⭐⭐⭐⭐⭐ Pure Aluminum Oxide - Better than other brands
*by B***5 on January 24, 2026*

I get an excellent polish with this 1200 grit. Rocks come out way shinier than when using other polish brands. For instance the Rockshed 1000 grit results in dull rocks in comparison. The Rockshed grit color is gray and under a high powered microscope you can see contamination, black particles, which make the overall color of the grit gray. Aluminum oxide, with high purity, should be white.

### ⭐⭐⭐⭐⭐ Newbie: Still learning
*by A***Y on August 10, 2020*

So I am new to rock tumbling, I just got my first hobby kit ever for my birthday in June (National Geographic Rock tumbler for those interested) the kit only came with so much grit and being as Ive collected a lot of rocks in the last however many years, I ran out fast. So I went to Polly Plastics to find some well priced and well working grit. Well it came SUPER fast. When I ordered on Friday it was estimated that I would receive my product by the following Wednesday, but I received it on Sunday. It was expertly packaged, you could tell that care went into me receiving my grit. Not only were the two one pound bags of grit in some heavy duty zipper sealed bags, but they were inside another zipper sealed bag, then wrapped in plastic. If these bags had leaked at all it wouldn’t have gone anywhere! Luckily they didn’t leak and I was able to get all my grit into the jar I use to keep it in. I’ll update in a few days to let you know the quality of the grind as my rocks are now currently in and being tumbled. Update: I took my rocks out of my tumbler today. For all those who would like to know my tumbler is a little 3 pound tumbler. Everything I have read says that you need to add two tablespoons of grit. When I pulled my rocks out today there was SO much extra grit that it had created a nearly cement layer at the bottom of my tumbler that took several washes in order to clear out the grit and get all my rocks out. Most of them were smooth enough to move on to the next phase. The grit is very shiny, almost metallic. I’ll update in a few more days, I put only one tablespoon in for this round. Update: Just pulled the batch out that had only one tablespoon of grit in it and it worked beautifully, it seems that for my 3 lb. hobby tumbler one tablespoon of this grit is plenty. I have attached a picture of my rocks that are ready to go on to phase 2.

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-02*