Ultra Quiet Brushless Rock Tumbler Kit โ€“ 7LB Dual Barrel Polisher with Noise-Canceling Cover, Complete Gemstone & Jewelry STEM Set for Adults & Gift

โ˜…โ˜…โ˜…โ˜…โ˜… 4.8 36 reviews

$90.00
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$90.00
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Free shipping Free 30-day returns

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Management number 213296628 Release Date 2026/04/12 List Price $36.00 Model Number 213296628
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  • ๐Ÿ’กWe have also prepared extra belts for your spare use at no cost. Reach out to our customer center to get some โ€” absolutely free.
  • ๐Ÿ—๐ŸŽ-๐ƒ๐š๐ฒ ๐…๐ซ๐ž๐ž ๐“๐ซ๐ข๐š๐ฅ & ๐Ÿ-๐˜๐ž๐š๐ซ ๐–๐š๐ซ๐ซ๐š๐ง๐ญ๐ฒ โ€” ๐–๐จ๐ซ๐ซ๐ฒ-๐…๐ซ๐ž๐ž ๐๐ฎ๐ซ๐œ๐ก๐š๐ฌ๐ž: Includes a ๐Ÿ—๐ŸŽ-๐๐š๐ฒ ๐Ÿ๐ซ๐ž๐ž ๐ญ๐ซ๐ข๐š๐ฅ and ๐Ÿ-๐ฒ๐ž๐š๐ซ ๐ฐ๐š๐ซ๐ซ๐š๐ง๐ญ๐ฒ for added peace of mind. If Amazonโ€™s 30-day return window is missed, ๐”๐’-๐›๐š๐ฌ๐ž๐ ๐œ๐ฎ๐ฌ๐ญ๐จ๐ฆ๐ž๐ซ ๐ฌ๐ฎ๐ฉ๐ฉ๐จ๐ซ๐ญ ๐ข๐ฌ ๐š๐ฏ๐š๐ข๐ฅ๐š๐›๐ฅ๐ž to assist with replacement or refund requests. ๐‘๐ž๐ฉ๐ฅ๐š๐œ๐ž๐ฆ๐ž๐ง๐ญ ๐ฉ๐š๐ซ๐ญ๐ฌ ๐ซ๐ž๐ฆ๐š๐ข๐ง ๐š๐ฏ๐š๐ข๐ฅ๐š๐›๐ฅ๐ž ๐ฅ๐จ๐ง๐ -๐ญ๐ž๐ซ๐ฆ to help keep the rock tumbler in working condition.
  • Ultra Quiet Brushless Motor with Noise-Canceling Cover: Powered by a next-generation brushless motor, this rock tumbler delivers smooth, stable polishing with over 20,000 hours of lifespan. The noise-canceling cover and dual rubber barrels reduce sound by up to 75%, making it ideal for homes, classrooms, and shared spaces.
  • 7Lbs Dual Barrel Capacity for Efficient Polishing: Polish more rocks at once with two independent barrels. Perfect for running coarse and fine grit simultaneously, this rotary tumbler is ideal for agates, gemstones, crystals, and jewelry preparation.
  • Precision Digital Control with 4 Speeds & 9-Day Timer: The intuitive digital panel offers full control over speed and polishing time. Features include auto shutoff, memory recall, and hands-free operation, ensuring consistent and repeatable results for beginners and professionals.
  • Complete Rock Tumbler Kit with Full Accessories: Includes natural rocks, multiple polishing grits, ceramic media, belts, jewelry findings, strainer, and a step-by-step guide. A perfect STEM learning kit for kids, parents, educators, and hobbyists.
  • U.S.-Based Support, Warranty & Spare Parts: Backed by a 1-year warranty and lifetime technical support. Replacement belts and accessories are available anytime, providing long-term reliability and peace of mind.
Size Large
Color A: Dual-barrel Rock Tumbler Kit - Blue
Theme beginner gemstone polishing kit, complete rock polishing kit, educational rock tumbling kit, gemstone polishing rock tumbler, noise reducing rock polisher, rock polisher for serious user and rock collectors, rock tumbler kit for adults, stone polishing machine for beginners
Set Name KomeStone Ultra Quiet Brushless Rock Tumbler Kit (Complete Set with Accessories)
Brand Name KomeStone
Unit Count 1.0 Count
Item Weight 7.2 Kilograms
Manufacturer KomeStone
Material Type Brushless Motor, Plastic Base, Please email to our after-sales service center to receive the extra belts for spare use after placing the order. Any issues with your order will be solved timely., Stainless Steel, Tyre Grade Rbber Barrel
Operation Mode Automatic
Item Dimensions 17.64 x 7.87 x 10.4 inches
Included Components 1 rock tumbler base & 2 rubber barresl, 1+1 = 2 belts & user instructions, 2 pounds of rocks & jewelry fastenings, Email to our customer service team for extra belts for spare use at no cost after you get the package. We are always here to help you to solve any issues timely., adaptor & screwdriver & mesh strainer & 8 bags of polishing grits & ceramic pellets
Indoor Outdoor Usage Indoor
Is Assembly Required No
Age Range Description 13 years and up
Educational Objective Creative design, Patience, Teaching geology
Supported Battery Types No batteries required
Manufacturer Part Number RTK4-260122-04
Manufacturer Maximum Age MONTHS 1200.0
Manufacturer Minimum Age MONTHS 156.0
Manufacturer Warranty Description 1 Year Warranty Against Manufacturer Defects

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4.8 out of 5
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