--- product_id: 689924308 title: "Refill Grit Kit for 12 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish" brand: "mjr tumblers" price: "106637CFA" currency: XOF in_stock: true reviews_count: 7 category: "Mjr Tumblers" url: https://www.desertcart.sn/products/689924308-refill-grit-kit-for-12-lb-rock-tumblers-silicon-carbide store_origin: SN region: Senegal --- # 75% quieter motor fast polishing cycle 4-stage grit system Refill Grit Kit for 12 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish **Brand:** mjr tumblers **Price:** 106637CFA **Availability:** ✅ In Stock ## Summary > 💎 Elevate your rock game—shine like a pro, every time! ## Quick Answers - **What is this?** Refill Grit Kit for 12 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish by mjr tumblers - **How much does it cost?** 106637CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/689924308-refill-grit-kit-for-12-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 - • **Effortless Polishing:** Just add stones and grit, then relax while the powerful motor does the work. - • **Long-Lasting Sharpness:** Premium Silicon Carbide stays sharper longer for unbeatable polishing efficiency. - • **Universal Compatibility:** Works seamlessly with any rock tumbler brand—freedom to choose your gear. - • **Whisper-Quiet Operation:** 75% noise reduction with leak-resistant barrel for a peaceful tumbling experience. - • **Pro-Grade 4-Step Grit Kit:** From coarse Silicon Carbide to fine Aluminum Oxide for flawless gemstone shine. ## Overview The MJR Tumblers Refill Grit Kit offers a professional-grade 4-stage polishing system using Silicon Carbide and Aluminum Oxide grits designed for 12 lb rock tumblers. Compatible with any brand, it ensures fast, efficient, and quiet polishing with a durable, leak-resistant barrel and powerful motor. Perfect for hobbyists and pros aiming for flawless gemstone finishes. ## Description Product Description Review: arrived safe - fast delivery from the US to the UK arrived with NO leakage of grit. Was confused about the amount as said 50lbs was thinking that was the wieght of it, but after checking more I realised was for a 50lb tumbler size . So was spot on wieghing 9lb. 60z. Review: Not 6lbs - There was loose grit all over the packaging which had to be thrown away and meant the grits were contaminated with other grades of grit so unusable ## 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 | B07F3LNC55 | | Age Range Description | Kid | | Best Sellers Rank | 99,877 in Toys & Games ( See Top 100 in Toys & Games ) 4,550 in Learning & Education Toys | | Brand Name | MJR Tumblers | | Colour | Grey | | Customer Reviews | 4.5 out of 5 stars 286 Reviews | | Educational Objective | Learn about rock types and mineral properties through hands-on polishing activities | | Is Assembly Required | No | | Item Weight | 36 Ounces | | Manufacturer | MJR Tumblers | | Manufacturer Part Number | MJR12pgk | | Material Type | Aluminum Oxide Silicon Carbide | | Minimum Age Recommendation | 8.00 | | Operation Mode | Automatic | | Power Source | AC adapter | | Size | 12 Lb | | Supported Battery Types | No batteries required | | Theme | Geology | ## Images ![Refill Grit Kit for 12 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 1](https://m.media-amazon.com/images/I/61aeQRPy1vL.jpg) ![Refill Grit Kit for 12 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 2](https://m.media-amazon.com/images/I/71SVNiXuCwL.jpg) ![Refill Grit Kit for 12 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 12 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 4](https://m.media-amazon.com/images/I/61mhoieNFpL.jpg) ![Refill Grit Kit for 12 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - Image 5](https://m.media-amazon.com/images/I/71u-VNXNY6L.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ arrived safe *by S***O on 20 March 2026* fast delivery from the US to the UK arrived with NO leakage of grit. Was confused about the amount as said 50lbs was thinking that was the wieght of it, but after checking more I realised was for a 50lb tumbler size . So was spot on wieghing 9lb. 60z. ### ⭐⭐⭐ Not 6lbs *by L***E on 3 March 2025* There was loose grit all over the packaging which had to be thrown away and meant the grits were contaminated with other grades of grit so unusable ### ⭐⭐⭐⭐⭐ Works well *by L***E on 26 March 2026* Good product ## Frequently Bought Together - Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 12lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned - 2 LBS Rock Tumbling Ceramic Filler Medi Rock Tumbling Ceramic Filler Media Non- Abrasive Ceramic Pellets for All Type Tumblers 3/16" X 3/8" --- ## 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.sn/products/689924308-refill-grit-kit-for-12-lb-rock-tumblers-silicon-carbide](https://www.desertcart.sn/products/689924308-refill-grit-kit-for-12-lb-rock-tumblers-silicon-carbide) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-07-21*