---
product_id: 676867597
title: "KomeStone Ultra Quiet Brushless Rock Tumbler Kit – 7lb Capacity Dual-Barrel with Noise-Canceling Cover, Up to 6× Quieter, Include All Accessories, Professional Rock Polisher for Adults & Gift Giving"
brand: "komestone"
price: "¥29806"
currency: JPY
in_stock: false
reviews_count: 8
url: https://www.desertcart.jp/products/676867597-komestone-ultra-quiet-brushless-rock-tumbler-kit-7lb-capacity-dual
store_origin: JP
region: Japan
---

# 6× quieter noise-canceling cover 9-day timer with memory & auto shutoff Brushless motor for smooth power KomeStone Ultra Quiet Brushless Rock Tumbler Kit – 7lb Capacity Dual-Barrel with Noise-Canceling Cover, Up to 6× Quieter, Include All Accessories, Professional Rock Polisher for Adults & Gift Giving

**Brand:** komestone
**Price:** ¥29806
**Availability:** ❌ Out of Stock

## Summary

> 🔮 Polish your passion quietly, powerfully, perfectly.

## Quick Answers

- **What is this?** KomeStone Ultra Quiet Brushless Rock Tumbler Kit – 7lb Capacity Dual-Barrel with Noise-Canceling Cover, Up to 6× Quieter, Include All Accessories, Professional Rock Polisher for Adults & Gift Giving by komestone
- **How much does it cost?** ¥29806 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/676867597-komestone-ultra-quiet-brushless-rock-tumbler-kit-7lb-capacity-dual)

## 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

- • **Whisper-Quiet Operation:** Noise-canceling cover cuts sound by 6×, letting you enjoy your hobby anywhere without disturbing your flow or your space.
- • **Revolutionary Brushless Motor:** Experience ultra-smooth, efficient tumbling with the first-ever brushless motor in rock tumblers—polish like a pro every time.
- • **Massive 7lb Dual-Barrel Capacity:** Tumble twice the rocks simultaneously—perfect for ambitious projects or gifting polished gems that wow.
- • **Precision Polishing with 4-Speed Control:** Customize your polish with four speeds and track progress via the Polishing Cycle Record Button—perfect results, zero guesswork.
- • **All-Inclusive Starter Kit + Lifetime Support:** From rough stones to jewelry fastenings, plus lifetime U.S.-based support and free accessory kits—start tumbling confidently today.

## Overview

The Ultra Quiet Brushless Rock Tumbler Kit features a cutting-edge brushless motor for superior tumbling performance, a large 7lb dual-barrel capacity, and a noise-canceling cover that reduces sound by up to 6×. It offers 4-speed controls, a 9-day timer with memory and auto shutoff, and includes all necessary accessories for beginners and pros alike. Backed by lifetime customer support and a satisfaction guarantee, it’s the ultimate tool for professional-quality rock polishing at home.

## Description

desertcart.com: KomeStone Ultra Quiet Brushless Rock Tumbler Kit – 7lb Capacity Dual-Barrel with Noise-Canceling Cover, Up to 6× Quieter, Include All Accessories, Professional Rock Polisher for Adults & Gift Giving : Toys & Games

Review: PROCESS 2 X 3.5 lbs. BARRELS SIMULTANEOUSLY - If you're new to rock tumbling and you do enjoy tumbling your stones you probably would like to do twice as much product Don't look any further this product is awesome It has the BEST BARREL'S & LIDS on the market double insulated The lids are twice as thick as any other ones on the market for a beginners value , also has brushless motor design which is twice as reliable as a brushed motor and twice the longevity , well built unit for the price . Unless you're using a professional machine this will fit all of your needs usually the professional equipment cost at least twice $349.00 as much to start , if not three times as much $700.00. At that level it's a completely different ballpark.
Review: Double Barrel Disappointment:( - Don’t waste your money because by the time you realize it’s a total piece of crap it will be past the 30 days and is too late to return. You will go through belts like crazy. So then they will send you a kit to rebuild the belt system, but it only makes it run like crap, overheats and shuts off. It will only spin one barrel half full an makes it Hella slow, on the highest speed #4 it only spins about as fast as speed #1 on my single barrel one. It’s definitely a certified P.O.S. Needs a bigger motor and or bigger belt pulley system to operate correctly that would make it an awesome lil set up. You’re better off buying 2 single barrel ultra quiet units they work great I highly recommend. I have owned one longer than this double barrel and have had no problems with it at all

## Features

- 💞 𝐀𝐟𝐭𝐞𝐫 𝐏𝐥𝐚𝐜𝐢𝐧𝐠 𝐘𝐨𝐮𝐫 𝐎𝐫𝐝𝐞𝐫, 𝐏𝐥𝐞𝐚𝐬𝐞 𝐂𝐨𝐧𝐭𝐚𝐜𝐭 𝐔𝐬 𝐈𝐦𝐦𝐞𝐝𝐢𝐚𝐭𝐞𝐥𝐲 𝐓𝐨 𝐑𝐞𝐜𝐞𝐢𝐯𝐞 𝐀 𝐒𝐩𝐚𝐫𝐞 𝐀𝐜𝐜𝐞𝐬𝐬𝐨𝐫𝐲 𝐊𝐢𝐭 𝐚𝐧𝐝 𝐀𝐧 𝐄𝐱𝐭𝐫𝐚 𝟏 𝐋𝐛 𝐁𝐚𝐠 𝐎𝐟 𝐒𝐭𝐨𝐧𝐞𝐬 (𝐯𝐚𝐥𝐮𝐞𝐝 𝐚𝐭 $𝟏𝟎).
- ☝ 𝐖𝐞 𝐏𝐫𝐨𝐦𝐢𝐬𝐞 𝐓𝐨 𝐀𝐝𝐝𝐫𝐞𝐬𝐬 𝐀𝐧𝐲 𝐈𝐬𝐬𝐮𝐞𝐬 𝐏𝐫𝐨𝐦𝐩𝐭𝐥𝐲 𝐀𝐧𝐝 𝐄𝐟𝐟𝐞𝐜𝐭𝐢𝐯𝐞𝐥𝐲. 𝐈𝐟 𝐍𝐞𝐞𝐝𝐞𝐝, 𝐃𝐨𝐧'𝐭 𝐇𝐞𝐬𝐢𝐭𝐚𝐭𝐞 𝐓𝐨 𝐑𝐞𝐚𝐜𝐡 𝐎𝐮𝐭 𝐓𝐨 𝐔𝐬.
- Cutting-Edge Brushless Motor for Superior Performance: The KomeStone Ultra Quiet Rock Tumbler features a revolutionary brushless motor, providing fast, efficient, and smooth tumbling action. As the first and only brushless motor rock tumbler on the market, it ensures optimal polishing results for your rocks and gemstones.
- 7-LB Capacity & 6X Quieter Operation: With its dual barrel design and 7-lb capacity, this tumbler allows you to tumble more rocks at once, making it ideal for large projects. The noise-reduction cover reduces sound by up to 6X, providing a quieter, more enjoyable tumbling experience—perfect for indoor use or in noise-sensitive environments.
- Exclusive Precision Polishing with 4-Speed Controls： Achieve perfectly polished stones with 4-speed controls for precise tumbling. The 9-day timer with automatic shutoff and memory function ensures consistent results, while the Polishing Cycle Record Button helps you track each cycle for more efficient management of your tumbling process.
- Everything For Rocks Tumbling Included： Everything you need to get started with rock tumbling is included in the box: two 3.5-lb capacity rubber barrels, 2 lbs of rough gemstones in 9 different varieties, 2 durable belts, 8 bags of polishing grit, a sifter, mesh strainer, ceramic pellets, jewelry fastenings, and a step-by-step tutorial guide. It’s so simple to use that even a 6-year-old can start tumbling right away!
- Dedicated Customer Support & Lifetime Guarantee： KomeStone is committed to providing exceptional customer service and support. Our lifetime troubleshooting and accessory replacements ensure your satisfaction, making us a trusted name in rock tumblers. If you have any issues, our U.S.-based customer service team is always here to help.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DFLYTMB6 |
| Age Range Description | 13 years and up |
| Best Sellers Rank | #668,244 in Toys & Games ( See Top 100 in Toys & Games ) #129 in Kids' Rock Tumblers |
| Brand Name | KomeStone |
| Color | K4: Brushless Motor & Noise Reduction Rock Tumbler Kit |
| Customer Reviews | 3.6 out of 5 stars 16 Reviews |
| Educational Objective | hobby |
| Included Components | 1 rock tumbler base & 2 rubber barresl, 1+1 = 2 belts & user instructions, 2 pounds of rocks & 8 bages of polishing grits & ceramic pellets, jewelry fastenings & adaptor, screwdriver & mesh strainer |
| Indoor Outdoor Usage | Indoor |
| Item Dimensions | 17 x 7 x 10 inches |
| Manufacturer | KomeStone |
| Manufacturer Part Number | KS0829RT67 |
| Manufacturer recommended age | 4 years and up |
| Material Type | Plastic |

## Images

![KomeStone Ultra Quiet Brushless Rock Tumbler Kit – 7lb Capacity Dual-Barrel with Noise-Canceling Cover, Up to 6× Quieter, Include All Accessories, Professional Rock Polisher for Adults & Gift Giving - Image 1](https://m.media-amazon.com/images/I/81-HnEzI++L.jpg)
![KomeStone Ultra Quiet Brushless Rock Tumbler Kit – 7lb Capacity Dual-Barrel with Noise-Canceling Cover, Up to 6× Quieter, Include All Accessories, Professional Rock Polisher for Adults & Gift Giving - Image 2](https://m.media-amazon.com/images/I/813jJEvCohL.jpg)
![KomeStone Ultra Quiet Brushless Rock Tumbler Kit – 7lb Capacity Dual-Barrel with Noise-Canceling Cover, Up to 6× Quieter, Include All Accessories, Professional Rock Polisher for Adults & Gift Giving - Image 3](https://m.media-amazon.com/images/I/818XCz5LunL.jpg)
![KomeStone Ultra Quiet Brushless Rock Tumbler Kit – 7lb Capacity Dual-Barrel with Noise-Canceling Cover, Up to 6× Quieter, Include All Accessories, Professional Rock Polisher for Adults & Gift Giving - Image 4](https://m.media-amazon.com/images/I/812lG1fcwfL.jpg)
![KomeStone Ultra Quiet Brushless Rock Tumbler Kit – 7lb Capacity Dual-Barrel with Noise-Canceling Cover, Up to 6× Quieter, Include All Accessories, Professional Rock Polisher for Adults & Gift Giving - Image 5](https://m.media-amazon.com/images/I/81qgsjKrHKL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ PROCESS 2 X 3.5 lbs. BARRELS SIMULTANEOUSLY
*by D***N on January 19, 2025*

If you're new to rock tumbling and you do enjoy tumbling your stones you probably would like to do twice as much product Don't look any further this product is awesome It has the BEST BARREL'S & LIDS on the market double insulated The lids are twice as thick as any other ones on the market for a beginners value , also has brushless motor design which is twice as reliable as a brushed motor and twice the longevity , well built unit for the price . Unless you're using a professional machine this will fit all of your needs usually the professional equipment cost at least twice $349.00 as much to start , if not three times as much $700.00. At that level it's a completely different ballpark.

### ⭐ Double Barrel Disappointment:(
*by J***E on April 27, 2025*

Don’t waste your money because by the time you realize it’s a total piece of crap it will be past the 30 days and is too late to return. You will go through belts like crazy. So then they will send you a kit to rebuild the belt system, but it only makes it run like crap, overheats and shuts off. It will only spin one barrel half full an makes it Hella slow, on the highest speed #4 it only spins about as fast as speed #1 on my single barrel one. It’s definitely a certified P.O.S. Needs a bigger motor and or bigger belt pulley system to operate correctly that would make it an awesome lil set up. You’re better off buying 2 single barrel ultra quiet units they work great I highly recommend. I have owned one longer than this double barrel and have had no problems with it at all

### ⭐⭐⭐⭐ Rock tumbler
*by R***R on June 12, 2025*

It works well, however the noise level is not as quiet as I expected it to be.

## Frequently Bought Together

- Ultra Quiet Rock Tumbler Kit, Professional Brushless Motor & Double-Barrel for 7 LBS Capacity, 6X Noise Cancelling Rock Polisher for Rock Collectors with All Accessories, Ideal Gift for Adults
- Rock Tumbler Grit and Polish Refill Kit - 6 Pounds. Value Pack for Polishing, Ideal for Up to 40 lbs. of Rocks, 4-Step Tumbling Media Kit, Compatible with Any Rock Polisher, More Grits, Better Result

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-10-27*