--- product_id: 509702302 title: "Refill Grit Kit for 15 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish" brand: "mjr tumblers" price: "68306CFA" currency: XOF in_stock: true reviews_count: 5 category: "Mjr Tumblers" url: https://www.desertcart.sn/products/509702302-refill-grit-kit-for-15-lb-rock-tumblers-silicon-carbide store_origin: SN region: Senegal --- # universal tumbler compatibility fast polishing cycle 4-stage grit system Refill Grit Kit for 15 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish **Brand:** mjr tumblers **Price:** 68306CFA **Availability:** ✅ In Stock ## Summary > ✨ Elevate your rock game—shine like the pros do! ⚡ ## 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?** 68306CFA 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/509702302-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 - • **Speed Meets Precision:** Quickly remove stock and polish to perfection without sacrificing quality - • **Long-Lasting Sharpness:** Premium Silicon Carbide stays harder and sharper longer for unbeatable results - • **Whisper-Quiet Tumbling:** Runs 75% quieter with leak-resistant barrel and heavy-duty build - • **Pro-Grade 4-Step Grit Kit:** From coarse Silicon Carbide to fine Aluminum Oxide for flawless finishes - • **Universal Fit for Any Tumbler:** Compatible with all brands, giving you freedom and flexibility ## Overview The MJR Tumblers Refill Grit Kit offers a professional 4-stage polishing system using Silicon Carbide and Aluminum Oxide grits. Designed for fast, high-quality rock tumbling, it fits any brand tumbler and ensures long-lasting sharpness and quieter operation. Perfect for millennials who demand efficiency and flawless results in their creative hobbies. ## Description Product Description Review: received - After 11 days, I received the grit! Polishes rocks nicely! 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. ## 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 | 130,335 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 75 in Tumbling Media | | Brand | MJR Tumblers | | Compatible Material | Aluminium | | Customer Reviews | 4.4 out of 5 stars 752 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 - **Material:** Silicon Carbide, Aluminum Oxide - **Grit Material:** Silicon Carbide, Aluminum Oxide - **Item dimensions L x W x H:** 8 x 6 x 2.25 inches - **Brand:** MJR Tumblers - **Grit Type:** Coarse, Fine, Ultra Fine ## 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) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐ received *by T***N on 29 March 2026* After 11 days, I received the grit! Polishes rocks nicely! ### ⭐⭐⭐⭐⭐ 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. ### ⭐⭐⭐⭐⭐ Passion-fueled and high quality *by K***A on 11 July 2025* This grit and polish set is exceptional. You can tell it was crafted by people who genuinely care — not just about rocks, but about the process and purpose. This company emanates expertise and enthusiasm, and that shows in the results. My rocks came out more beautiful than ever and I would prefer to buy only from these rock guys. The picture is of some rocks from my apartment landscaping after the process . The instructions are detailed but easy to follow. It’s not your typical instruction manual, rather a sincere document created by the seller from the heart (their tips and tricks included!). It’s really unique and special. I’ve been using a “gimmicky” tumbler set for my HS STEM program and at home with my kids. As a teacher, is a great tool for many lessons and even many subjects. ## Frequently Bought Together - MJR Tumblers Refill Grit Kit for 25 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 --- ## 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/509702302-refill-grit-kit-for-15-lb-rock-tumblers-silicon-carbide](https://www.desertcart.sn/products/509702302-refill-grit-kit-for-15-lb-rock-tumblers-silicon-carbide) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-08-10*