--- product_id: 492593694 title: "Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 10lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned" brand: "mjr tumblers" price: "$161.50" currency: USD in_stock: true reviews_count: 5 category: "Mjr Tumblers" url: https://www.desertcart.us/products/492593694-refill-grit-kit-w-mjr-tumblers-premium-quality-extreme-polish store_origin: US region: United States of America --- # 4-stage premeasured silicon carbide grit 12,000 grit sub-micron polish Proud Disabled & Veteran Owned USA brand Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 10lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned **Brand:** mjr tumblers **Price:** $161.50 **Availability:** ✅ In Stock ## Summary > ✨ Polish Like a Pro, Shine Like No Other! 🪨 ## Quick Answers - **What is this?** Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 10lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned by mjr tumblers - **How much does it cost?** $161.50 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/492593694-refill-grit-kit-w-mjr-tumblers-premium-quality-extreme-polish) ## 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 4-Stage System:** Premeasured grit for all tumbler types—just pour and tumble, no guesswork needed. - • **Unmatched Polish Precision:** Experience the ultimate 12,000 grit sub-micron aluminum oxide polish for jaw-dropping rock shine. - • **Rock-Solid Quality Assurance:** Trusted by 1,000+ users with a 4.4-star rating for consistent, professional results. - • **Support a Veteran-Owned Brand:** Feel good polishing with a proudly Disabled and Veteran owned American company. - • **Complete 10lb Kit Ready to Roll:** Includes coarse to ultra-fine grits perfectly portioned for your 10lb tumbler—no extras required. ## Overview MJR Tumblers’ Refill Grit Kit delivers a premium 4-stage silicon carbide and exclusive 12,000 grit aluminum oxide polish designed for 10lb rock tumblers. Premeasured for convenience and backed by a Disabled and Veteran owned American company, this kit guarantees unparalleled shine and professional-grade results with every tumble. ## Description Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 10lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned : desertcart.ae: Arts & Crafts Review: Will buy again - I purchased a rock tumbler, the first time I uses it I used the grit it came with. I wasn't happy with results. So looked into different grit. I only used the shine grit ( last stage) on the rocks that had already been tumbled with a shine grit and I was surprised at the difference. I haven't used the others but I'm sure the quality is just as good. Review: received - After 11 days, I received the grit! Polishes rocks nicely! ## Features - Extreme Polish! Every rock tumbling kit from MJR Tumblers comes with our Exclusive 12,000 Grit Sub Micron Extreme Aluminum Oxide Polish! No other polish even comes close to our results. If you want the best, MJR Tumblers 12,000 Grit Aluminum Oxide Extreme Polish is what you need! - MJR Tumblers is a Disabled and Veteran Owned Company! - Premeasured and works with all rotary and vibratory tumblers. All 4 Stages are premeasured for your tumbler, just pour and roll! It Can’t get easier than that! - Each 10lb kit contains the following: 10oz of course 60/90 silicon carbide grit, 10oz of fine 120/220 silicon carbide grit, 5oz of pre polish 400/600 silicon carbide grit, 5oz of MJR Tumblers Exclusive 12,000 grit Extreme Aluminum Oxide Polish - MJR Tumblers is Proud to be an American company located in Pecatonica Illinois in the good ole USA! - Free, easy to understand rock polishing instructions with lots of tips and tricks are included with every purchase from MJR Tumblers! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07FHLKRY1 | | Age Range Description | Kid | | Brand Name | MJR Tumblers | | Color | Grey | | Customer Reviews | 4.4 out of 5 stars 1,017 Reviews | | Educational Objective | Develop patience and understanding of multi-step processes through rock tumbling. | | Is Assembly Required | No | | Item Weight | 30 Ounces | | Manufacturer | MJR Tumblers | | Manufacturer Minimum Age (MONTHS) | 8.0 | | Manufacturer Part Number | MJR10pgk | | Material Type | Silicon Carbide Aluminum Oxide Plastic Pellets | | Model Number | MJR10pgk | | Operation Mode | Manual | | Power Source | Hand-powered | | Size | for 10lb barrel | | Supported Battery Types | No batteries required | | Theme | Nature | | Unit Count | 1.0 Count | ## Product Details - **Brand:** MJR Tumblers - **Grit material:** Silicon Carbide - **Grit type:** Coarse - **Item dimensions L x W x H:** 20.3 x 15.2 x 3.8 centimeters - **Material:** metal, carbide Aluminum ## Images ![Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 10lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned - Image 1](https://m.media-amazon.com/images/I/61aeQRPy1vL.jpg) ![Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 10lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned - Image 2](https://m.media-amazon.com/images/I/71SVNiXuCwL.jpg) ![Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 10lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned - Image 3](https://m.media-amazon.com/images/I/71ENSH8w-mL.jpg) ![Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 10lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned - Image 4](https://m.media-amazon.com/images/I/61mhoieNFpL.jpg) ![Refill Grit Kit w MJR Tumblers Premium Quality Extreme Polish 12,000 Grit Sub Micron Aluminum Oxide Polish for Unparalleled Result. For 10lb Rock Tumblers w Silicon Carbide, Disabled and Veteran Owned - Image 5](https://m.media-amazon.com/images/I/71u-VNXNY6L.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Will buy again *by K***E on 30 January 2025* I purchased a rock tumbler, the first time I uses it I used the grit it came with. I wasn't happy with results. So looked into different grit. I only used the shine grit ( last stage) on the rocks that had already been tumbled with a shine grit and I was surprised at the difference. I haven't used the others but I'm sure the quality is just as good. ### ⭐⭐⭐⭐ 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. ## 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.us/products/492593694-refill-grit-kit-w-mjr-tumblers-premium-quality-extreme-polish](https://www.desertcart.us/products/492593694-refill-grit-kit-w-mjr-tumblers-premium-quality-extreme-polish) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-16*