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Dual-Barrel Rock Tumbler Kit – 8LB Extra Large Capacity (4LB × 2), Brushless Mot:
$257.48
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Dual-Barrel Rock Tumbler Kit – 8LB Extra Large Capacity (4LB × 2), Brushless Motor & Heavy Metal Base, 3 Speeds & 9-Day Timer, Rock Polisher for Adults & Collectors, Full Accessories IncludedDescription Age Range Description 13 years and up Manufacturer Maximum Age (MONTHS) 1200 Manufacturer Minimum Age (MONTHS) 156 Unit Count 1.0 Count Included Components 1-Year Warranty Card & Illustrated User Book, 2 Spare Belts, Jewelry Fastenings, Mesh Strainer, Screwdriver, Power Adapter, 9 Types & 2Lb Assorted Rough Rocks, 8 Bags of Polishing Grits, Metal Rock Tumbler Base & 4lb Capacity Rubber Barrel *2 Model Number G2 Rock Tumbler Kit Manufacturer Part Number RTG2-260310-08 Educational Objective Teaching geology, creative design, patience Is Assembly Required No Color 8lb: Double Barrel Size 8LB Item Dimensions 1 x 1 x 1 inches Material Type Cutting-Edge Brushless Motor, Heavy-Duty Metal Base, Rubber, Stainless Steel Product description 1 Brushless Motor 2 Stable Operation 3 Heavy Duty Metal 1 Dual-Barrel System 2 Noise Reduction 3 8LB Extra-Large Capacity 4 Easy to Open 5 Built with Intention 1 Smart Controls 2 Uninterrupted Tumbling 3 Set & Forget More About KomeStone Add to Cart Customer Reviews 4.6 out of 5 stars 250 4.6 out of 5 stars 92 4.7 out of 5 stars 93 4.5 out of 5 stars 240 4.5 out of 5 stars 870 4.3 out of 5 stars 3,796 3.9 out of 5 stars 44 Price $284.99$284.99 $31.98$31.98 $149.98$149.98 $95.98$95.98 $107.98$107.98 $72.15$72.15 $38.97$38.97 Motor Brushless Motor X Brushless Motor Brushless Motor Brushless Motor Brushless Motor Brushed Motor Settings 99-Day Timer X 4 Speed / 9-Day Timer 3 Speed / 9-Day Timer 3 Speed / 9-Day Timer 3 Speed / 9-Day Timer 3 Speed / 9-Day Timer Capacity 22LB Weight 6 Lb 7LB 4LB 3LB 2.5LB 1LB Applications Rocks, Coins, Sea Glasss, Etc. Rocks, Coins, Sea Glasss, Etc. Rocks, Coins, Sea Glasss, Etc. Rocks, Coins, Sea Glasss, Etc. Rocks, Coins, Sea Glasss, Etc. Rocks, Coins, Sea Glasss, Etc. Rocks, Coins, Sea Glasss, Etc. Target Groups Adults Kids & Adults Kids & Adults Kids & Adults Kids & Adults Kids & Adults Kids & Adults - Long-term tumbling under heavy loads can cause natural wear on belts over time. Reach out to our support team to request 5 extra belts — absolutely free.
- More Output, Less Waiting – DOUBLE 4LB Barrels For Adults & Serious Collectors : Unlike single-barrel tumblers that force you to wait between stages, two 4LB barrels let you run different stones or polishing stages simultaneously. Handle larger batches, process multiple rock types at once, and complete projects up toup to 100% more output per session — without extending individual run cycles. The rock tumbler for adults who want real results, not just a starter kit.
- Parallel Tumbling For A Smarter, More Efficient Workflow : Run coarse grinding in one barrel while advancing to fine polishing in the other — or process stones of different hardness levels at the same time. This dual-barrel system doesn\'t just add capacity; it eliminates the idle time between stages that single-barrel tumblers require, making your entire workflow fundamentally more efficient.
- Heavy-Duty Brushless Motor & Reinforced Metal Base – Built To Outlast : Unlike brushed motors prone to heat buildup and premature wear, the high-efficiency brushless motor in this heavy duty rock tumbler delivers stable, low-heat output for up to 40,000 hours — over a decade of reliable use. The reinforced metal base reduces vibration and supports consistent operation through extended tumbling cycles. KomeStone was among the first to bring brushless motor technology to rock tumblers, with reliability validated by over 1 Million users in the U.S.
- Smart Controls For Precise, Multi-Stage Polishing : Program each stage with precision using 3 adjustable speeds and a 9-day programmable timer matched to your tumbling cycle. Auto shut-off and memory function allow safe, unattended operation — so your stones keep polishing even when you step away. Smart control technology refined through extensive real-world use ensures consistent, repeatable results every time.
- Complete Advanced Kit – Everything You Need To Start Tumbling : Includes 2×4LB rubber barrels, 2lb premium rough gemstones, complete 4-stage polishing grit set(8 bags), 2 spare belts, screwdriver, jewelry findings, mesh strainer, and a full-color instruction manual Book — everything required for a full multi-stage project right out of the box. Designed for serious hobbyists and collectors who want a more capable, efficient rock tumbling experience, it also makes a premium gift choice for enthusiasts and hobby starters alike.
- 𝟗𝟎-𝐃𝐚𝐲 𝐆𝐮𝐚𝐫𝐚𝐧𝐭𝐞𝐞 & 𝟏-𝐘𝐞𝐚𝐫 𝐖𝐚𝐫𝐫𝐚𝐧𝐭𝐲 : Enjoy peace of mind with our extended 90-day refund guarantee and 1-year warranty. If you miss Amazon\'s 30-day return window, simply contact our 𝐔𝐒-𝐛𝐚𝐬𝐞𝐝 𝐜𝐮𝐬𝐭𝐨𝐦𝐞𝐫 𝐬𝐞𝐫𝐯𝐢𝐜𝐞 team for 𝐨𝐫 𝐫𝐞𝐟𝐮𝐧𝐝 is designed for rock tumbling enthusiasts in the U.S., offering rock tumbling machines and grit systems for beginners and hobby users. The lineup includes the K Series: K1, K1 Pro, K2 Elite with noise-reduction design, K4 dual-barrel model with upgraded motor, and K5 beginner-friendly model. The G Series includes G1 (4LB), G2 (8LB), and G3 (22LB heavy-duty metal base). Select models feature upgraded motor designs, including brushless motor options. A complete grit system is also available for multi-stage tumbling, lapidary finishing, and gemstone polishing applications.
ABOUT US We offer the best prices around on high quality products. Our E-store includes media such as books, movies, music and games while offering electronics, toys, sporting apparel, clothing, tools, general home, garden items and more. SHIPPING We are always working hard to ensure your package arrives as soon as possible. Please understand that some factors like weather, high postal traffic, and the performance of shipping companies are outside of our control.We offer free shipping to the lower 48 states and ship within 2 business days of payment, usually sooner. We do not accept P.O. Boxes. Please provide a physical address.For shipping outside of the continental USA, we only use 's Global Shipping Program.The item is shipped to KY and then sent to the rest of the world. International customers are responsible for all duties and taxes. Continue to check out in order to calculate costs for shipping the item to your country. Messages regarding 's Global Shipping Program MUST be directed at EXCLUSIVELY. RETURNS We offer a 30-Day Return Policy on items which you are not completely satisfied with. You have the option for a full-refund or an exchange of the item. No returns are available on items shipped outside of the USA. PAYMENT We accept PayPal. CONTACT US This page content is yet to come
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