--- product_id: 559456958 title: "Refill Grit Kit for 20 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish" brand: "mjr tumblers" price: "€ 287.62" currency: EUR in_stock: true reviews_count: 2 category: "Mjr Tumblers" url: https://www.desertcart.hr/products/559456958-refill-grit-kit-for-20-lb-rock-tumblers-silicon-carbide store_origin: HR region: Croatia --- # 1200 Aluminum Oxide Polish - mirror finish 500/600 Silicon Carbide Grit - advanced smoothing 60/90 & 120/220 Silicon Carbide Grit - precision grinding Refill Grit Kit for 20 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish **Brand:** mjr tumblers **Price:** € 287.62 **Availability:** ✅ In Stock ## Summary > ✨ Elevate your rock tumbling game—because your stones deserve the spotlight! ⚙️ ## Quick Answers - **What is this?** Refill Grit Kit for 20 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish by mjr tumblers - **How much does it cost?** € 287.62 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/559456958-refill-grit-kit-for-20-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 - • **Versatile Compatibility:** Optimized for 20 lb tumblers with options to customize grit weights or add plastic pellets. - • **Generous 60 oz Total Volume:** Ample grit and polish quantities tailored for 20 lb rock tumblers—no mid-project refills needed. - • **Precision Multi-Stage Grit System:** Four-step grit progression ensures flawless stone refinement from rough to mirror shine. - • **Premium Green Silicon Carbide Blend:** Faster, sharper, and longer-lasting grit for efficient and superior polishing results. - • **Comprehensive Polishing Instructions Included:** Step-by-step guidance to master the art of rock tumbling and avoid common pitfalls. ## Overview The MJR Tumblers Refill Grit Kit offers a complete four-stage polishing system with high-purity green/black silicon carbide grits and aluminum oxide polish, designed specifically for 20 lb rock tumblers. This 60-ounce kit delivers efficient, professional-grade stone smoothing and polishing, supported by detailed instructions to ensure optimal results every time. ## Description Grit Kit for 20 pound Rock Tumblers20 ounces of 60/90 Graded Silicon Carbide Grit (Step 1) 20 ounces of 120/220 Graded Silicon Carbide Grit (Step 2) 10 ounces of 500/600 Graded Silicon Carbide Grit (Step 3) 10 ounces of 1200 Aluminum Oxide Polish (Step 4) Comes with FREE Polishing Instructions We use a superior blend of Green/Black Silicon Carbide for our first stage. Green Silicon Carbide is of higher purity than Black Silicon Carbide, therefore it will work faster than Black Silicon Carbide because it's harder and stays sharper longer. MJR Tumblers offers a large selection of heavy duty tumblers, a full range of silicon carbide grit (50, 80, 60/90, 500, 600, 500/600 and 1500) and aluminum oxide (400/600 and 1200). These can be purchased individually in any weight denomination that fits your needs or we have pre-made kits for your specific size tumbler. We have kits available with or without plastic pellets. Review: Pleased - The size was standard size happy with purchase Review: Failed to Polish - Went through all grits to polish stone in a tumbler, and ran the polish grit twice, with no polish result to any the stones. When I have used other grits, I have successfully brought the stones to a high gloss in the same tumbler. ## Features - 20 ounces of 60/90 Graded Silicon Carbide Grit (Step 1) - 20 ounces of 120/220 Graded Silicon Carbide Grit (Step 2) - 10 ounces of 500/600 Graded Silicon Carbide Grit (Step 3) - 10 ounces of 1200 Aluminum Oxide Polish (Step 4) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07F6YBMZC | | Battery Types | No batteries required | | Brand | MJR Tumblers | | Colour | Grey | | Customer Reviews | 4.6 out of 5 stars 39 Reviews | | Educational Objective | Develop fine motor skills, patience, and understanding of sequential processes through hands-on learning. | | Is Assembly Required | No | | Item Weight | 60 Ounces | | Manufacturer | MJR Tumblers | | Manufacturer Part Number | MJR20pgk | | Material | Aluminum Oxide Silicon Carbide | | Minimum Recommended age | 8.00 | | Operation Mode | Manual | | Power Source | manual | | Size | Large | | Unit Count | 1 Count | ## Images ![Refill Grit Kit for 20 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 1](https://m.media-amazon.com/images/I/61aeQRPy1vL.jpg) ![Refill Grit Kit for 20 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 2](https://m.media-amazon.com/images/I/71SVNiXuCwL.jpg) ![Refill Grit Kit for 20 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 3](https://m.media-amazon.com/images/I/71ENSH8w-mL.jpg) ![Refill Grit Kit for 20 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 4](https://m.media-amazon.com/images/I/61mhoieNFpL.jpg) ![Refill Grit Kit for 20 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 5](https://m.media-amazon.com/images/I/71u-VNXNY6L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Pleased *by S***A on 5 June 2026* The size was standard size happy with purchase ### ⭐ Failed to Polish *by V***I on 23 November 2021* Went through all grits to polish stone in a tumbler, and ran the polish grit twice, with no polish result to any the stones. When I have used other grits, I have successfully brought the stones to a high gloss in the same tumbler. --- ## 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.hr/products/559456958-refill-grit-kit-for-20-lb-rock-tumblers-silicon-carbide](https://www.desertcart.hr/products/559456958-refill-grit-kit-for-20-lb-rock-tumblers-silicon-carbide) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-17*