--- product_id: 77741296 title: "Rock Tumbler Grit Kit Refill for 3lb Tumblers, 4 Step Silicon Carbide & 12,000 Grit Aluminum Oxide Polish, Stone Polishing Kit for Rotary & Vibratory Rock Tumblers" brand: "mjr tumblers" price: "27851CFA" currency: XOF in_stock: true category: "Mjr Tumblers" url: https://www.desertcart.sn/products/77741296-rock-tumbler-grit-kit-refill-for-3lb-tumblers-4-step store_origin: SN region: Senegal --- # compatible with rotary & vibratory tumblers 4-stage precision grit system USA veteran-owned quality brand Rock Tumbler Grit Kit Refill for 3lb Tumblers, 4 Step Silicon Carbide & 12,000 Grit Aluminum Oxide Polish, Stone Polishing Kit for Rotary & Vibratory Rock Tumblers **Brand:** mjr tumblers **Price:** 27851CFA **Availability:** ✅ In Stock ## Summary > 💎 Elevate your rock game—shine like the pros do! ## Quick Answers - **What is this?** Rock Tumbler Grit Kit Refill for 3lb Tumblers, 4 Step Silicon Carbide & 12,000 Grit Aluminum Oxide Polish, Stone Polishing Kit for Rotary & Vibratory Rock Tumblers by mjr tumblers - **How much does it cost?** 27851CFA 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/77741296-rock-tumbler-grit-kit-refill-for-3lb-tumblers-4-step) ## 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 - • **Flawless 4-Step Polish:** From rough to mirror-smooth with coarse to ultra-fine 12,000 grit stages - • **Pre-Measured Perfection:** Exact doses for 6lb tumblers—no guesswork, just results - • **Effortless Rock Transformation:** Turn raw stones into polished gems with minimal effort - • **Universal Tumbler Compatibility:** Seamlessly works with both rotary and vibratory models - • **Veteran-Owned Quality Assurance:** Crafted by a USA-based disabled veteran brand you can trust ## Overview The MJR Tumblers Rock Tumbler Grit Kit Refill is a complete 4-stage polishing system designed for 6lb rock tumblers. Featuring silicon carbide grits and a premium 12,000 grit aluminum oxide polish, it delivers professional-grade smoothness compatible with rotary and vibratory tumblers. Proudly made by a USA veteran-owned company, this kit simplifies rock polishing with pre-measured doses for consistent, high-quality results. ## Description Buy MJR Tumblers Rock Tumbler Grit Kit Refill for 3lb Tumblers, 4 Step Silicon Carbide & 12,000 Grit Aluminum Oxide Polish, Stone Polishing Kit for Rotary & Vibratory Rock Tumblers: Rock Tumblers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - COMPLETE 4-STAGE ROCK POLISHING SYSTEM: This refill grit kit includes all four essential stages of rock tumbling—coarse (60/90), fine (120/220), pre-polish (400/600), and ultra-fine 12,000 grit aluminum oxide polish. Designed to guide stones from rough surfaces to a smooth, polished finish. - 12,000 GRIT ULTRA-FINE POLISH FOR FINAL FINISH: The included sub-micron aluminum oxide polish is designed for the final stage, helping bring out a smooth, refined surface. Ideal for achieving a clean and polished appearance after shaping and smoothing stages - PRE-MEASURED FOR 3LB TUMBLERS – EASY TO USE: Each stage is pre-measured specifically for 3lb rock tumblers, simplifying the polishing process. Just add the contents at each stage and let the tumbler do the work—no complicated measuring required - COMPATIBLE WITH ROTARY & VIBRATORY TUMBLERS: Works with most rock tumblers, including rotary and vibratory models. A versatile grit refill option for maintaining your polishing workflow or restocking supplies. - USA OWNED BRAND WITH QUALITY MATERIALS: Offered by a USA-based, disabled and veteran-owned company. MJR Tumblers provides reliable rock tumbling supplies designed for consistent performance and ease of use. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07DZ54NQN | | Best Sellers Rank | #25,005 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #21 in Tumbling Media | | Brand Name | MJR Tumblers | | Compatible Material | Aluminum Oxide; Silicon Carbide | | Customer Reviews | 4.5 4.5 out of 5 stars (1,324) | | Grit Material Type | Aluminum Oxide; Silicon Carbide | | Grit Number | 12000 | | Grit Type | Coarse; Fine; Pre Polish; Polish | | Item Dimensions | 8 x 6 x 0.4 inches | | Item Weight | 8.96 ounces | | Manufacturer | MJR Tumblers | | Material Type | Aluminum Oxide, Plastic Pellets, Silicon Carbide | | Model | MJR3pgk | | Number of Items | 4 | | Part Number | MJR3pgk | | Set Name | 4-Stage Rock Tumbler Grit Kit | | Unit Count | 4 Count | ## Product Details - **Brand:** MJR Tumblers - **Grit Material:** Aluminum Oxide; Silicon Carbide - **Grit Type:** Coarse; Fine; Pre Polish; Polish - **Item dimensions L x W x H:** 8 x 6 x 0.4 inches - **Material:** Aluminum Oxide, Plastic Pellets, Silicon Carbide ## Images ![Rock Tumbler Grit Kit Refill for 3lb Tumblers, 4 Step Silicon Carbide & 12,000 Grit Aluminum Oxide Polish, Stone Polishing Kit for Rotary & Vibratory Rock Tumblers - Image 1](https://m.media-amazon.com/images/I/61aeQRPy1vL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Can you use this for a 1 lb National Geographic tumbler** A: It should work just fine. This is just the grit and the grit is usable in any tumbler. **Q: Can this grit be used for grinding and polishing rock thin sections?** A: i would think so **Q: After the polish, are the rocks glossy and shiny?** A: They won't be as shiny as you think. The grit polish the rocks so try are smooth but there is a fifth stage in rock polishing called burnishing that you have to do at the end. Search the internet on directions but it involves tumbling them in soap like borax. Also, if you want your rocks to look good you have to get the ceramic filler pellets to even out the tumbles. Plastic doesn't do the trick like ceramic. Filler pellets vs no filler pellets is a big difference on helping the rocks get shiny. ## Frequently Bought Together - Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Results. For 3lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned - UU UNIHOM 3 lbs Bulk Rough Madagascar Stones Mix Large 1" Natural Raw Stones Crystal for Tumbling, Cabbing, Fountain Rocks, Decoration,Polishing, Wire Wrapping, Wicca Reiki Crystal Healing - FORBY 3 lbs Bulk Rough Madagascar Stones Mix - Large 1" Natural Raw Stones Crystal for Tumbling, Cabbing, Fountain Rocks, Decoration,Polishing, Wire Wrapping, Wicca & Reiki Crystal Healing --- ## 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/77741296-rock-tumbler-grit-kit-refill-for-3lb-tumblers-4-step](https://www.desertcart.sn/products/77741296-rock-tumbler-grit-kit-refill-for-3lb-tumblers-4-step) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-10-24*