--- product_id: 109104746 title: "Rock Tumbler Media Grit Refill, Pre-Polish 500 Silicon Carbide Grit, Stage 3 for Tumbling Stones (2 Pack) (1 lb.)" brand: "polly plastics" price: "¥10206" currency: JPY in_stock: true reviews_count: 9 category: "Polly Plastics" url: https://www.desertcart.jp/products/109104746-rock-tumbler-media-grit-refill-pre-polish-500-silicon-carbide store_origin: JP region: Japan --- # 500 grit precision pre-polish Universal tumbler compatibility Made in USA quality Rock Tumbler Media Grit Refill, Pre-Polish 500 Silicon Carbide Grit, Stage 3 for Tumbling Stones (2 Pack) (1 lb.) **Brand:** polly plastics **Price:** ¥10206 **Availability:** ✅ In Stock ## Summary > 💎 Elevate your rock game—because your stones deserve the best polish! ## Quick Answers - **What is this?** Rock Tumbler Media Grit Refill, Pre-Polish 500 Silicon Carbide Grit, Stage 3 for Tumbling Stones (2 Pack) (1 lb.) by polly plastics - **How much does it cost?** ¥10206 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/109104746-rock-tumbler-media-grit-refill-pre-polish-500-silicon-carbide) ## 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 - • **Mess-Free Storage:** Durable, reusable jars keep your grit fresh and spills at bay, making your workspace as polished as your stones. - • **Fits Every Tumbler:** Compatible with all major rock tumblers—Elenco, Lortone, Smithsonian, and more—so you never miss a beat. - • **Stage 3 Perfection:** Achieve flawless pre-polish results with 500 silicon carbide grit, the essential step before final shine. - • **American-Made Assurance:** Crafted in the USA with premium materials for unmatched quality and contaminant-free tumbling. - • **Beginner Friendly Guarantee:** Backed by 100% satisfaction promise—perfect for hobbyists and pros eager to elevate their craft. ## Overview Polly Plastics Rock Tumbler Media Grit Refill offers 1 lb. of premium 500 silicon carbide grit designed for Stage 3 pre-polishing in the 4-step tumbling process. Compatible with all major rock tumblers, it comes in durable, reusable jars to prevent spills and ensure easy storage. Made in the USA with high-quality materials, this grit guarantees superior results and is backed by a 100% satisfaction guarantee, making it ideal for both beginners and seasoned rock tumblers. ## Description Buy Polly Plastics Rock Tumbler Media Grit Refill, Pre-Polish 500 Silicon Carbide Grit, Stage 3 for Tumbling Stones (2 Pack) (1 lb.): Tumbling Media - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Does a good job, touching up knives! - Quality stuff, delivery was fast ! Review: Best rock tumbling grits on desertcart - 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. ## Features - STAGE 3 OF 4 STEP ROCK TUMBLING MEDIA GRIT – Two 1/2 lb. jars of Stage 3 media grit for transforming rocks and gemstones into beautiful treasures. Contains a total of 1 lb. Pre-polish 500 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 | B07P4XBFLF | | Best Sellers Rank | #11,971 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #12 in Tumbling Media | | Brand | Polly Plastics | | Brand Name | Polly Plastics | | Customer Reviews | 4.8 out of 5 stars 399 Reviews | | Grit Number | 500 | | Item Dimensions | 6 x 6 x 1.5 inches | | Item Weight | 226.8 g | | Item dimensions L x W x H | 6 x 6 x 1.5 inches | | Manufacturer | Polly Plastics | | Material | silicone carbide | | Material Type | silicone carbide | | Model | 3405246817 | | Part Number | 3405246817 | ## Product Details - **Brand:** Polly Plastics - **Grit Number:** 500 - **Item Weight:** 226.8 g - **Item dimensions L x W x H:** 6 x 6 x 1.5 inches - **Material:** silicone carbide ## Images ![Rock Tumbler Media Grit Refill, Pre-Polish 500 Silicon Carbide Grit, Stage 3 for Tumbling Stones (2 Pack) (1 lb.) - Image 1](https://m.media-amazon.com/images/I/71Walz6JPXL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Does a good job, touching up knives! *by M***D on February 8, 2026* Quality stuff, delivery was fast ! ### ⭐⭐⭐⭐⭐ 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. ### ⭐⭐⭐⭐⭐ Expensive but worth it *by L***A on November 3, 2025* This is my go to grit for rock tumbling. I’ve tried less expensive options, but get the most consistency from this grit. Can you find less expensive, yes, but I think the extra cost is worth it. ## Frequently Bought Together - Polly Plastics Rock Tumbler Media Grit Refill, Pre-Polish 500 Silicon Carbide Grit, Stage 3 for Tumbling Stones (2 Pack) (1 lb.) - 10 lbs Rock Tumbler Grit - Tumbler Media Grit,Rock Polishing Grit Media, Works with Any Rock Tumbler, Rock Polisher, Stone Polisher,COARSE 60/90 Silicon Carbide Grit, Step 1 for Tumbling Stones - 5 lbs Rock Tumbler Grit Step 1 Tumbler Media Grit,Rock Polishing Grit Media, Works with Any Rock Tumbler, Rock Polisher, Stone Polisher,COARSE 60/90 Silicon Carbide Grit, Step 1 for Tumbling Stones --- ## 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.jp/products/109104746-rock-tumbler-media-grit-refill-pre-polish-500-silicon-carbide](https://www.desertcart.jp/products/109104746-rock-tumbler-media-grit-refill-pre-polish-500-silicon-carbide) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-26*