--- product_id: 542553468 title: "K2 Ultra Quiet Rock Tumbler Kit - 3LB Professional Rock Polisher | Quiet Brushless Motor, Up to 6X Noise Reduction, Adjustable 9-Day Timer & Speeds, Full Accessories, Ideal for Adults & Kids" brand: "komestone" price: "$417.56" currency: USD in_stock: true category: "Kome Stone" url: https://www.desertcart.us/products/542553468-k2-ultra-quiet-rock-tumbler-kit-3lb-professional-rock-polisher store_origin: US region: United States of America --- # 9-day programmable timer 6X quieter operation Brushless motor for durability K2 Ultra Quiet Rock Tumbler Kit - 3LB Professional Rock Polisher | Quiet Brushless Motor, Up to 6X Noise Reduction, Adjustable 9-Day Timer & Speeds, Full Accessories, Ideal for Adults & Kids **Brand:** komestone **Price:** $417.56 **Availability:** โœ… In Stock ## Summary > ๐Ÿ”ฎ Elevate your hobby with the quiet power of professional polishing! ## Quick Answers - **What is this?** K2 Ultra Quiet Rock Tumbler Kit - 3LB Professional Rock Polisher | Quiet Brushless Motor, Up to 6X Noise Reduction, Adjustable 9-Day Timer & Speeds, Full Accessories, Ideal for Adults & Kids by komestone - **How much does it cost?** $417.56 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/542553468-k2-ultra-quiet-rock-tumbler-kit-3lb-professional-rock-polisher) ## Best For - komestone enthusiasts ## Why This Product - Trusted komestone brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - โ€ข **All-Inclusive Pro Kit:** Start tumbling immediately with premium stones, grits, accessories, and a step-by-step guide designed for serious collectors. - โ€ข **Maximized 3LB Capacity:** Polish 50% more stones per cycleโ€”more variety, less waiting, and bigger hobby wins. - โ€ข **Whisper-Quiet Tumbling:** Run your rock polishing sessions anytime without disturbing your space or neighbors. - โ€ข **Brushless Motor Powerhouse:** Experience smoother, cooler, and longer-lasting performance that keeps your stones perfectly polished batch after batch. - โ€ข **Smart Speed & Timer Control:** Customize 3 speeds and a 9-day timer with settings recall for flawless, hands-off polishing every time. ## Overview The KomeStone Ultra Quiet Rock Tumbler Kit features a 3LB rubber barrel with noise-reduction cover and a brushless motor that runs up to 6X quieter than standard models. It offers 3 speed settings, a 9-day programmable timer with settings recall, and includes a complete set of polishing grits, rough stones, and accessories. Designed for adult hobbyists and collectors, it delivers professional-quality results with minimal noise and maximum convenience. ## Description desertcart.com: KomeStone K2 Ultra Quiet Rock Tumbler Kit - 3LB Professional Rock Polisher | Quiet Brushless Motor, Up to 6X Noise Reduction, Adjustable 9-Day Timer & Speeds, Full Accessories, Ideal for Adults & Kids : Toys & Games ## Features - Ultra Quiet Performance for Home Tumbling โ€” The K2 Quiet Elite runs up to 6X quieter than standard rock tumblers. A dedicated noise-reduction cover seals around the barrel to contain vibration, while soft rubber barrel walls cut tumbling noise by up to 75% vs. plastic barrels. Run it in an apartment, a shared workspace, or overnight without disturbing โ€” ideal for families, beginners, and hobbyists who value a peaceful environment. - Covered Barrel Design for Family-Safe Operation โ€” The noise-reduction cover does double duty: it contains noise AND acts as a protective barrier that prevents children from touching the rotating barrel during operation. This makes the K2 Quiet Elite safe for family use with children ages 8 and up โ€” parents can run tumbling cycles with peace of mind, knowing little hands stay clear. Perfect for family science projects, STEM learning activities, and introducing kids to geology in a safe, controlled way. - Premium Brushless Motor for Long-Lasting Performance โ€” The K2 Quiet Elite runs on a brushless motor designed for smoother barrel rotation, lower heat output, and significantly reduced wear compared to brushed alternatives. No brushes means fewer moving parts to replace, a longer service life, and more consistent torque across every polishing stage โ€” so stones polish evenly from the first batch to the hundredth. Whether it's your first rock tumbler or an upgrade from a basic model, the brushless drive system ensures reliable performance for years to come. - 3LB Capacity for Every Skill Level โ€” The K2 Quiet Elite's 3LB rubber barrel gives you 50% more capacity than 2LB entry-level models โ€” more stones per cycle means fewer batches and more time enjoying finished results. Handles agates, jasper, quartz, river rocks, crystals, and most popular tumbling stones. The soft rubber walls protect stones from excessive impact while keeping noise low. Whether you're a first-time tumbler, a family exploring geology together, or an experienced hobbyist, the 3Lb Quiet Premium capacity handles projects of any size. - Smart Controls for Consistent Results โ€” Dial in the right tumbling speed for each polishing stage with 3 selectable speed settings. The 9-day programmable timer runs each stage automatically and shuts off when complete. Settings Recall stores your timer and speed configuration โ€” so if power is interrupted, the K2 Quiet Elite picks up exactly where it left off without needing to be reprogrammed. Simple enough for beginners, reliable enough for experienced users โ€” consistent results every time. - Complete Kit for Day-One Start โ€” Everything needed to start tumbling is included in the box โ€” the rock tumbler, 3Lb soft rubber barrel, 1Lb of rough gemstones (9 varieties), complete 4-stage polishing grit set, ceramic pellets, sifter, 2 drive belts (1 spare), jewelry finding, and a full-color illustrated guidebook with step-by-step instructions. Great as a first rock tumbler for kids, teens, and adults โ€” no additional purchases needed to start polishing stones from day one. - Step-by-Step Guidance for Better Tumbling โ€” The included full-color guidebook covers everything from initial setup to finishing your first batch โ€” with detailed polishing techniques, troubleshooting steps, and practical tips like adding soapy water during polishing stages. Our US-based support team is also available anytime for polishing questions or machine help. Together, the comprehensive guidance and dedicated support help adults, beginners, teens, and families make real progress โ€” from rough stones to finished keepsakes. Makes a complete geology or STEM gift for rock enthusiasts of all ages. - Replaceable Key Parts for Long-Term Ownership โ€” Core components are designed to be individually replaceable, not discarded. The motor, control panel, drive belt, rubber barrel, and metal lid kit are each available as replacement parts directly from KomeStone, with no planned end to parts supply. This stone polisher isn't a one-season purchase โ€” it's a permanent part of your hobby setup. - ๐Ÿ—๐ŸŽ-๐ƒ๐š๐ฒ ๐Œ๐จ๐ง๐ž๐ฒ-๐๐š๐œ๐ค ๐†๐ฎ๐š๐ซ๐š๐ง๐ญ๐ž๐ž & ๐Ÿ-๐˜๐ž๐š๐ซ ๐–๐š๐ซ๐ซ๐š๐ง๐ญ๐ฒ โ€” ๐‘๐ข๐ฌ๐ค-๐…๐ซ๐ž๐ž ๐๐ฎ๐ซ๐œ๐ก๐š๐ฌ๐ž โ€” Shop with complete confidence. Your K2 elite rock tumbler kit is backed by a 90-day satisfaction guarantee and a 1-year warranty. Miss desertcart's return window? Our US-based customer service team offers 24/7 hassle-free replacement or refund support โ€” we've got you covered. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C58TH7W6 | | Best Sellers Rank | #11,905 in Toys & Games ( See Top 100 in Toys & Games ) #8 in Kids' Rock Tumblers | | Brand Name | KomeStone | | Color | Black | | Customer Reviews | 4.4 4.4 out of 5 stars (592) | | Included Components | 1 extra belt for spare use and 4 polishing grits, 1 lb rough stones, illustrated tutorial learning guide, 1 x sifter, 1 x screwdriver, 1 set jewelry Fastenings, 1 x tumbler machine, 1 x 3 lb barrel, 1.5m AC adapter, Warranty Card ( Lifetime customert service email: support@komestone.com ) | | Item Type Name | Rock Tumbler | | Item Weight | 3.9 kg | | Manufacturer | KomeStone | | Manufacturer Part Number | CA-KS0515RT46 | | Material Type | Cutting-Edge brushless motor, Please email to our after-sales service center ( support@komestone.com ) to receive the extra bag of rocks for spare use after placing the order. Our customer service will solve any issues timely., Stainless Steel, Tyre grade rubber, ๐‚๐๐’๐ˆ๐€ & ๐‚๐๐‚ ๐‚๐ž๐ซ๐ญ๐ข๐Ÿ๐ข๐ž๐ | | Model Number | CA-KS0515RT46 | | Number of Items | 1 | | Number of Packs | 1 | | Power Source | Corded Electric | | Unit Count | 1 Count | ## Product Details - **Brand:** KomeStone - **Color:** Black - **Power Source:** Corded Electric ## Images ![K2 Ultra Quiet Rock Tumbler Kit - 3LB Professional Rock Polisher | Quiet Brushless Motor, Up to 6X Noise Reduction, Adjustable 9-Day Timer & Speeds, Full Accessories, Ideal for Adults & Kids - Image 1](https://m.media-amazon.com/images/I/81ZU5JdBXnL.jpg) ![K2 Ultra Quiet Rock Tumbler Kit - 3LB Professional Rock Polisher | Quiet Brushless Motor, Up to 6X Noise Reduction, Adjustable 9-Day Timer & Speeds, Full Accessories, Ideal for Adults & Kids - Image 2](https://m.media-amazon.com/images/I/71KeCSb4IIL.jpg) ![K2 Ultra Quiet Rock Tumbler Kit - 3LB Professional Rock Polisher | Quiet Brushless Motor, Up to 6X Noise Reduction, Adjustable 9-Day Timer & Speeds, Full Accessories, Ideal for Adults & Kids - Image 3](https://m.media-amazon.com/images/I/71upjFHocYL.jpg) ![K2 Ultra Quiet Rock Tumbler Kit - 3LB Professional Rock Polisher | Quiet Brushless Motor, Up to 6X Noise Reduction, Adjustable 9-Day Timer & Speeds, Full Accessories, Ideal for Adults & Kids - Image 4](https://m.media-amazon.com/images/I/712SRAASkcL.jpg) ![K2 Ultra Quiet Rock Tumbler Kit - 3LB Professional Rock Polisher | Quiet Brushless Motor, Up to 6X Noise Reduction, Adjustable 9-Day Timer & Speeds, Full Accessories, Ideal for Adults & Kids - Image 5](https://m.media-amazon.com/images/I/81UGLw+zJEL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: How can I order more polishing grits?** A: We have a polishing grits kit of 4 lbs, just visit the link: https://www.amazon.com/dp/B0B74KYP44. For any questions and concerns, please contact our customer service via: support@komestone.com, we'll get back to you very soon. For any issues about this rock tumbler, we promise to solve timely. We are standing behind our brand and products. Thanks for purchasing from us. **Q: How much polishing grits should I use?** A: For better results, we would advise you to add 2 tbsp or more of polishing grits per pound of rocks, and 0.5 lb-1 lb of the ceramic pellets for protect rocks from scratches. **Q: What is the rotation speeds per minute?** A: Normally speaking, the speeds is quite steady. Speed 1๏ผš770 Speed 2๏ผš920 Speed 3๏ผš1080 **Q: Can I add more than 3 lbs rocks into this barrel for tumbling?** A: The capacity of the barrel for the K2 Elite rock tumbler is 3 lbs, so you can add as much as 3 lbs of rocks, and then add water, and polishing grits and ceramic pellets. For any questions and concerns, please contact our customer service via: support@komestone.com, we'll get back to you very soon. For any issues about this rock tumbler, we promise to solve timely. We are standing behind our brand and products. Thanks for purchasing from us. Anne. ## Frequently Bought Together - KomeStone K2 Elite Professional Rock Tumbler Kit, Ultra Quiet & Cutting Edge Brushless Motor Rock Polisher for Adults & Rock Collector, Noise-Reduction, Extra Large 3 Lbs Barrel, STEM Gift for All Age - Polly Plastics Rock Tumbler Grit and Polish Refill & Ceramic Tumbling Filler Media - Silicone Carbide Polisher Grit - Rock Polish Supplies & Accessories - KomeStone Nylon Belt 2-Pack for K2 Elite Rock Tumbler โ€“ Durable Replacement Belt K2 Elite Model Only / 2 Pcs --- ## Why Shop on Desertcart? - ๐Ÿ›’ **Trusted by 1.3+ Million Shoppers** โ€” Serving international shoppers since 2016 - ๐ŸŒ **Shop Globally** โ€” Access 737+ million products across 21 categories - ๐Ÿ’ฐ **No Hidden Fees** โ€” All customs, duties, and taxes included in the price - ๐Ÿ”„ **15-Day Free Returns** โ€” Hassle-free returns (30 days for PRO members) - ๐Ÿ”’ **Secure Payments** โ€” Trusted payment options with buyer protection - โญ **TrustPilot Rated 4.5/5** โ€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/542553468-k2-ultra-quiet-rock-tumbler-kit-3lb-professional-rock-polisher](https://www.desertcart.us/products/542553468-k2-ultra-quiet-rock-tumbler-kit-3lb-professional-rock-polisher) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-12*