--- product_id: 500431768 title: "Refill Grit Kit for 15 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish" brand: "mjr tumblers" price: "VT30940" currency: VUV in_stock: true reviews_count: 5 category: "Mjr Tumblers" url: https://www.desertcart.vu/products/500431768-refill-grit-kit-for-15-lb-rock-tumblers-silicon-carbide store_origin: VU region: Vanuatu --- # premium Silicon Carbide & Aluminum Oxide 75% quieter tumbling 4-stage grit system Refill Grit Kit for 15 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish **Brand:** mjr tumblers **Price:** VT30940 **Availability:** ✅ In Stock ## Summary > 💎 Elevate your rock game—shine like the pros, every time! ## Quick Answers - **What is this?** Refill Grit Kit for 15 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish by mjr tumblers - **How much does it cost?** VT30940 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/500431768-refill-grit-kit-for-15-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 - • **Universal Compatibility:** Works seamlessly with any rock tumbler brand—freedom to choose your gear. - • **Complete Refill Solution:** All-in-one kit tailored for 15 LB tumblers, ensuring you never run out of polishing power. - • **Pro-Grade 4-Step Grit Kit:** From coarse stock removal to mirror polish, every stage covered for flawless results. - • **Unmatched Grit Durability:** Premium Silicon Carbide stays sharper longer, delivering consistent, high-quality shine. - • **Effortless Polishing Experience:** Quiet, leak-resistant barrel and heavy-duty build make tumbling smooth and hassle-free. ## Overview The MJR Tumblers Refill Grit Kit offers a professional-grade, four-stage polishing system using durable Silicon Carbide and Aluminum Oxide grits. Designed for 15 LB rock tumblers, it ensures quick stock removal and a brilliant finish. Compatible with any tumbler brand, this kit features a quiet, leak-resistant design for an effortless polishing experience. ## Description Product Description Review: Worked as advertised - I'm new to rock tumbling, I've used a few different polishing grits and this is the best one so far. I ran this polish cycle for 7 days and am happy with the results. Review: This is TRUE GRIT! - This is simply some of the best quality tumbler grit I have used. If you do the first three stages properly, then the 12,000 girt polish will be perfect. All in all this is good, works well in each stage, easy to use. the only thing that might make it better would be to package it in bottles instead of bags, but honestly, that's about it. ## Features - COARSE, FINE, PRE-POLISH, AND POLISH KIT: Get the ideal results with this professionally-graded kit, starting from coarse Silicon Carbide Grit for quick stock removal to a finer Aluminum Oxide Polish Grit for a perfect finish. Get the job done quickly without compromising quality. A comprehensive kit that offers everything you need for sharpening and polishing. - QUICK WAY TO MAKE ROCKS SHINE: Get ready to bring your gemstones to life with our rock polisher grit refill pack. Achieve the ultimate shine with our superior-grade Silicon Carbide from Coarse to Pre-polish and Aluminum Oxide for a Finer Polish. Refill your rock polisher with our high-quality grit, enough to give your rocks and gems the sparkle they deserve. Our premium-grade silicon carbide is harder and stays sharper longer, giving you an unbeatable polishing experience. - POLISH INCREDIBLE ROCKS WITH MJR TUMBLERS: You'll have plenty of tumbling to do with MJR Tumblers. We offer 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, 1200, and 1500). These can be purchased individually in a weight denomination that best fits your needs, we also have pre-made kits for your specific size tumbler. We also have kits available with or without plastic pellets. - WORKS WITH ANY ROCK TUMBLER: No need to worry about compatibility. Our grit is designed to work with any rock tumbler from any brand, giving you the freedom of choice. Get smooth, polished rocks in no time without compromising on quality or performance! - EASY TUMBLE EXPERIENCE: MJR Tumblers runs on a powerful motor with a leak-resistant rubber barrel that reduces sound, making it 75% quieter than other plastic models, and made to last a long time. Heavy-duty 16-gauge welded steel frame, powder coated. Equipped with heavy-duty stainless steel ball bearings. It also has a quick and easy-to-use heavy-duty rubber cap. Just Pour in the rough stones and grit, then let the machine do its job! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07F3Q72YD | | Best Sellers Rank | 248,102 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 130 in Tumbling Media | | Brand | MJR Tumblers | | Compatible Material | Aluminium | | Customer Reviews | 4.5 out of 5 stars 259 Reviews | | Grit Material Type | Aluminium Oxide | | Grit Number | 12000 | | Grit Type | Coarse | | Grit material | Aluminium Oxide | | Grit type | Coarse | | Item Dimensions | 20.3 x 15.2 x 3.8 centimetres | | Item Weight | 1.45 Kilograms | | Item dimensions L x W x H | 20.3 x 15.2 x 3.8 centimetres | | Item weight | 1.45 Kilograms | | Manufacturer | MJR Tumblers | | Manufacturer Part Number | MJR15pgk | | Material | Aluminum Oxide Silicon Carbide | | Model Number | MJR15pgk | | Number of Items | 4 | | Unit Count | 1.0 count | ## Product Details - **Brand:** MJR Tumblers - **Grit material:** Aluminium Oxide - **Grit type:** Coarse - **Item dimensions L x W x H:** 20.3 x 15.2 x 3.8 centimetres - **Material:** Aluminium Oxide, Silicon Carbide ## Images ![Refill Grit Kit for 15 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 1](https://m.media-amazon.com/images/I/61aeQRPy1vL.jpg) ![Refill Grit Kit for 15 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 2](https://m.media-amazon.com/images/I/71SVNiXuCwL.jpg) ![Refill Grit Kit for 15 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 15 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 4](https://m.media-amazon.com/images/I/61mhoieNFpL.jpg) ![Refill Grit Kit for 15 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 5](https://m.media-amazon.com/images/I/71u-VNXNY6L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Worked as advertised *by A***Y on 27 August 2024* I'm new to rock tumbling, I've used a few different polishing grits and this is the best one so far. I ran this polish cycle for 7 days and am happy with the results. ### ⭐⭐⭐⭐⭐ This is TRUE GRIT! *by J***E on 15 December 2025* This is simply some of the best quality tumbler grit I have used. If you do the first three stages properly, then the 12,000 girt polish will be perfect. All in all this is good, works well in each stage, easy to use. the only thing that might make it better would be to package it in bottles instead of bags, but honestly, that's about it. ### ⭐⭐⭐⭐ 3 pounds of media to tumble 15 pounds of rock, not exactly what I though I was buying. *by C***M on 29 March 2024* Kind of annoyed that they don't have the nice labels as shown in the photos, would have made it easy to keep separated. Instead there's these small clear labels on the bags that you have to find.... That's basically half star off instead of a full star.... Fortunately, identifying the grits by sight looks like it should be fairly easy, especially the 12,000 grit AO polish powder - wish that was available on its own.... but I did find a diamond powder / polish mix alternative that might work at a similar cost per pound. Would have been real nice if the description was a little more clear in what you get.... i.e. 3lb media for 15lbs of rocks... which is the other half star off.... I was looking at a 7.2lb of media kit for about the same price only it had the 1500grit AO polishing powder. ## Frequently Bought Together - MJR Tumblers Refill Grit Kit for 15 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Hiceeden 8 Pounds Rock Tumbling Filler Media, 1/5" x 2/5" Reusable Cylinder Ceramic Pellets Non-Abrasive for Rock Tumbler, Stone Polisher - 8 LBS 3/16" X 3/8" Rock Tumbling Ceramic Filler Media Non-Abrasive Ceramic Pellets for All Type Tumblers --- ## 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.vu/products/500431768-refill-grit-kit-for-15-lb-rock-tumblers-silicon-carbide](https://www.desertcart.vu/products/500431768-refill-grit-kit-for-15-lb-rock-tumblers-silicon-carbide) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-06-05*