---
product_id: 112858789
title: "Polly Plastics Rock Tumbler Media Grit Refill, Medium 180/220 Silicon Carbide Grit, Stage 2 for Tumbling Stones (2 Pack) (2 lb.)"
brand: "polly plastics"
price: "$102"
currency: NZD
in_stock: true
reviews_count: 13
category: "Polly Plastics"
url: https://www.desertcart.nz/products/112858789-polly-plastics-rock-tumbler-media-grit-refill-medium-180-220
store_origin: NZ
region: New Zealand
---

# Medium 180/220 Silicon Carbide Grit Universal compatibility with all tumblers Made in USA, premium quality control Polly Plastics Rock Tumbler Media Grit Refill, Medium 180/220 Silicon Carbide Grit, Stage 2 for Tumbling Stones (2 Pack) (2 lb.)

**Brand:** polly plastics
**Price:** $102
**Availability:** ✅ In Stock

## Summary

> 💎 Elevate your rock tumbling game with pro-grade grit perfection!

## Quick Answers

- **What is this?** Polly Plastics Rock Tumbler Media Grit Refill, Medium 180/220 Silicon Carbide Grit, Stage 2 for Tumbling Stones (2 Pack) (2 lb.) by polly plastics
- **How much does it cost?** $102 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/112858789-polly-plastics-rock-tumbler-media-grit-refill-medium-180-220)

## 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

- • **American-Made Quality:** Crafted in the USA with rigorously sourced materials for purity
- • **Precision Stage 2 Grit:** Medium 180/220 silicon carbide for flawless stone smoothing
- • **Mess-Free Reusable Jars:** Durable packaging designed to prevent spills and store grit safely
- • **Beginner Friendly & Guaranteed:** 100% satisfaction promise for hobbyists and pros alike
- • **Universal Tumbler Compatibility:** Works seamlessly with Elenco, Lortone, National Geographic & more

## Overview

Polly Plastics Rock Tumbler Media Grit Refill offers 2 lbs 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 jars to prevent mess and ensure longevity. Made in the USA with high-quality materials, this grit guarantees superior polishing results and is backed by a satisfaction guarantee, making it ideal for both beginners and seasoned hobbyists.

## Description

Buy Polly Plastics Rock Tumbler Media Grit Refill, Medium 180/220 Silicon Carbide Grit, Stage 2 for Tumbling Stones (2 Pack) (2 lb.): Tumbling Media - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Good grit - This grit worked great for my first ever Columbia river rock polishing experiment. I didn't have enough stage 1 grit from the "starter" pack I originally purchased. I added another 3 TBSP to my tumbler and the rocks look great at stage 1
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.

## Features

- STAGE 2 OF 4 STEP ROCK TUMBLING MEDIA GRIT – Two 1 lb. jars of Stage 2 media grit for transforming rocks and gemstones into beautiful treasures. Contains a total of 2 lb. Medium 180/220 Silicon Carbide Grit.
- COMPATIBLE WITH ALL TUMBLERS - Our universal grit is designed for any rock tumbler. Elenco, Lortone, National Geographic, Smithsonian, Thumler and more!
- SUPERIOR PACKAGING - Packaged in durable, re-usable jars to prevent messy spills and to safely store unused product for later.
- MADE IN THE USA – Polly Plastics is an American company with American sourced materials for superior quality control and reduced risk of contaminants.
- BEGINNER FRIENDLY - 100% satisfaction guarantee on all our products.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07P2N3V53 |
| Best Sellers Rank | #12,137 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #9 in Tumbling Media |
| Brand | Polly Plastics |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,483) |
| Grit Material | Silicon Carbide |
| Grit Number | 220 |
| Grit Type | Medium |
| Item Weight | 2.1 pounds |
| Item dimensions L x W x H | 6 x 6 x 2.5 inches |
| Item model number | 3405246831 |
| Manufacturer | Polly Plastics |
| Manufacturer recommended age | 12 years and up |
| Material | Carbide, silicone |
| Product Dimensions | 6 x 6 x 2.5 inches |
| Set Name | Two Pack |

## Product Details

- **Brand:** Polly Plastics
- **Grit Material:** Silicon Carbide
- **Grit Type:** Medium
- **Item dimensions L x W x H:** 6 x 6 x 2.5 inches
- **Material:** Carbide, silicone

## Images

![Polly Plastics Rock Tumbler Media Grit Refill, Medium 180/220 Silicon Carbide Grit, Stage 2 for Tumbling Stones (2 Pack) (2 lb.) - Image 1](https://m.media-amazon.com/images/I/61DL5HbYuFL.jpg)
![Polly Plastics Rock Tumbler Media Grit Refill, Medium 180/220 Silicon Carbide Grit, Stage 2 for Tumbling Stones (2 Pack) (2 lb.) - Image 2](https://m.media-amazon.com/images/I/71AOmx0zXeL.jpg)
![Polly Plastics Rock Tumbler Media Grit Refill, Medium 180/220 Silicon Carbide Grit, Stage 2 for Tumbling Stones (2 Pack) (2 lb.) - Image 3](https://m.media-amazon.com/images/I/71v-lkdFtoL.jpg)
![Polly Plastics Rock Tumbler Media Grit Refill, Medium 180/220 Silicon Carbide Grit, Stage 2 for Tumbling Stones (2 Pack) (2 lb.) - Image 4](https://m.media-amazon.com/images/I/812ljwEIppL.jpg)
![Polly Plastics Rock Tumbler Media Grit Refill, Medium 180/220 Silicon Carbide Grit, Stage 2 for Tumbling Stones (2 Pack) (2 lb.) - 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

### ⭐⭐⭐⭐⭐ Good grit
*by T***B on August 22, 2025*

This grit worked great for my first ever Columbia river rock polishing experiment. I didn't have enough stage 1 grit from the "starter" pack I originally purchased. I added another 3 TBSP to my tumbler and the rocks look great at stage 1

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ Best rock tumbling grits on Amazon
*by M***E on May 19, 2025*

I have been rock tumbling for over two years now and I have purchased this brand multiple times and will continue to be a return customer. The grits work exactly as expected for each stage of tumbling. Important notes: - Get the one that has the ceramic filler - not the plastics. The ceramic will last way longer and be better on your rocks. - Also - watch some YouTube videos on how to tumble rocks and switch between stages. There's some important tips to make sure you get the best results. Michigan Rocks YouTube channel has some great instructions on it. For the price and quality, couldn't be happier.

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.nz/products/112858789-polly-plastics-rock-tumbler-media-grit-refill-medium-180-220](https://www.desertcart.nz/products/112858789-polly-plastics-rock-tumbler-media-grit-refill-medium-180-220)

---

*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-11*