--- product_id: 523505468 title: "Refill Grit Kit for 3 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish" brand: "mjr tumblers" price: "1809293₫" currency: VND in_stock: true reviews_count: 5 category: "Mjr Tumblers" url: https://www.desertcart.vn/products/523505468-refill-grit-kit-for-3-lb-rock-tumblers-silicon-carbide store_origin: VN region: Vietnam --- # Compact 20.32 x 15.24 x 1.02 cm 1.5 oz Aluminum Oxide Polish 3 oz Silicon Carbide Grit Refill Grit Kit for 3 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish **Brand:** mjr tumblers **Price:** 1809293₫ **Availability:** ✅ In Stock ## Summary > ✨ Unleash Your Inner Geologist with MJR Tumblers! ## Quick Answers - **What is this?** Refill Grit Kit for 3 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish by mjr tumblers - **How much does it cost?** 1809293₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/523505468-refill-grit-kit-for-3-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 - • **Polish Like a Pro:** Achieve a mirror-like finish with our 1200 Aluminum Oxide polish. - • **Age-Appropriate Fun:** Recommended for ages 8 months and up, perfect for budding rock hounds. - • **No Batteries Needed:** Eco-friendly and hassle-free, just add your rocks and grit! - • **Lightweight & Portable:** Weighing only 254.01 g, it's easy to store and transport. - • **Step-by-Step Perfection:** Includes 3 grades of Silicon Carbide Grit for optimal tumbling results. ## Overview The MJR Tumblers Refill Grit Kit is designed for 3 LB rock tumblers, featuring a comprehensive set of grits and polish to ensure your rocks shine like never before. With a total of 3 ounces of graded Silicon Carbide Grit and 1.5 ounces of Aluminum Oxide Polish, this kit is perfect for both beginners and seasoned enthusiasts. Lightweight and easy to use, it’s the ideal companion for anyone looking to elevate their rock tumbling game. ## Description MJR Tumblers Refill Grit Kit for 3 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish : desertcart.co.uk: Home & Kitchen Review: After 11 days, I received the grit! Polishes rocks nicely! Review: Buyer Beware! Read the small print on the size. This is a shockingly small amount of grit for the price. You might get 2 tumbles......maybe. I've paid less than this for 4 times the amount and just as good. Very misleading and sneaky. ## Features - 3 ounces of 60/90 Graded Silicon Carbide Grit (Step 1) - 3 ounces of 120/220 Graded Silicon Carbide Grit (Step 2) - 1.5 ounces of 500/600 Graded Silicon Carbide Grit (Step 3) - 1.5 ounces of 1200 Aluminum Oxide Polish (Step 4) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07DZ54NQN | | Best Sellers Rank | 115,866 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 70 in Tumbling Media | | Brand | MJR Tumblers | | Compatible Material | Stone | | Customer Reviews | 4.3 4.3 out of 5 stars (460) | | Grit Material Type | Aluminium Oxide, Carbide, Silicon Carbide | | Grit Number | 12000 | | Grit Type | Coarse | | Item Dimensions | 20.3 x 15.2 x 1 centimetres | | Item Weight | 0.56 Pounds | | Manufacturer | MJR Tumblers | | Manufacturer Part Number | MJR3pgk | | Material | Aluminum Oxide Silicon Carbide Plastic Pellets | | Model Number | MJR3pgk | | Number of Items | 4 | | Set Name | True | ## Product Details - **Brand:** MJR Tumblers - **Grit material:** Aluminium Oxide, Carbide, Silicon Carbide - **Grit type:** Coarse - **Item dimensions L x W x H:** 20.3 x 15.2 x 1 centimetres - **Material:** Aluminum Oxide Silicon Carbide Plastic Pellets ## Images ![Refill Grit Kit for 3 LB Rock Tumblers Silicon Carbide Aluminum Oxide Media Polish - 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. ## Customer Reviews ### ⭐⭐⭐⭐ Review *by T***N on 29 March 2026* After 11 days, I received the grit! Polishes rocks nicely! ### ⭐ Review *by S***D on 3 January 2026* Buyer Beware! Read the small print on the size. This is a shockingly small amount of grit for the price. You might get 2 tumbles......maybe. I've paid less than this for 4 times the amount and just as good. Very misleading and sneaky. ### ⭐ Review *by J***F on 16 February 2026* what a rip. the other reviews don't lie, this is an even smaller amount of grit than you're imagining. it's like a sample kit. photos of my scale are attached (and measurements include the plastic bag.) i've only used level 1 but it was less than 3 tablespoons. for a 3-lb tumbler it's half of what i needed for a single batch. there's a reason a lot of sellers don't put the weights on the packaging. ## 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.vn/products/523505468-refill-grit-kit-for-3-lb-rock-tumblers-silicon-carbide](https://www.desertcart.vn/products/523505468-refill-grit-kit-for-3-lb-rock-tumblers-silicon-carbide) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-21*