KomeStone Ultra Quiet Brushless Rock Tumbler Kit – 7Lb Capacity Dual-Barrel with Noise-Cancelling Cover, Up to 6X Quieter, Include All Accessories, Professional Rock Polisher for Adults & Gift Giving

𝟗𝟎-𝐃𝐚𝐲 𝐒𝐚𝐭𝐢𝐬𝐟𝐚𝐜𝐭𝐢𝐨𝐧 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 𝐡𝐚𝐬𝐬𝐥𝐞-𝐟𝐫𝐞𝐞 𝐫𝐞𝐩𝐥𝐚𝐜𝐞𝐦𝐞𝐧𝐭 𝐨𝐫 𝐫𝐞𝐟𝐮𝐧𝐝 𝐚𝐬𝐬𝐢𝐬𝐭𝐚𝐧𝐜𝐞. We offer 𝟐𝟒/𝟕 𝐜𝐥𝐚𝐢𝐦 𝐬𝐮𝐩𝐩𝐨𝐫𝐭 to ensure your complete satisfaction.

7Lb Dual-Barrel Capacity for Polishing More at Once: This dual-barrel rotary tumbler handles up to 7 pounds of rocks in one cycle—perfect for polishing coarse and fine grit simultaneously. Whether you’re restoring gemstones or prepping materials for jewelry, this stone polisher offers high-volume performance in a compact footprint, great for hobbyists, crafters, and serious collectors.

Precision Control with 4 Speeds & 9-Day Timer:The digital panel gives you full control over every stage. Choose from 4 speed levels, program up to 9 days, and enjoy features like auto shutoff, memory recall, and a polishing progress log. Ideal for repeatable, hands-free use, this polishing machine delivers consistent results with zero guesswork.

Complete STEM Kit with Full Accessories:Everything you need is included: 2 lbs of assorted rocks, 8 polishing grits, ceramic pellets, jewelry findings, belts, strainer, and a colorful step-by-step guide. Great for beginners and seasoned tumblers alike, this STEM-friendly rock tumbler kit is perfect for starters, rock collectors, parents, educators, and DIY enthusiasts.

U.S.-Based Support, 1-Year Warranty, Lifetime Help:Your purchase is backed by KomeStone’s commitment to customer satisfaction. We offer a 1-year warranty covering free replacement of all accessories, plus lifetime technical support from our dedicated U.S.-based team. Whether you’re using this quiet rock tumbler for agates, gemstones, or jewelry polishing, we’re here every step of the way—ensuring peace of mind for beginners and pros alike.

Spare Belt Support – We're Always Here to Help: The belt may wear out for long-term use. If it breaks or if you’d like to keep spares on hand, feel free to reach out anytime after purchase—we’ll be happy to send you some extras.

About KomeStone: KomeStone rock tumblers are the first with brushless motor technology and now lead U.S. sales by a wide margin. We are more than a manufacturer — we’re your partner, offering reliable products and lifetime support you can count on.