---
product_id: 542553468
title: "K2:Professional & Noise Reuction"
brand: "komestone"
price: "€ 191.76"
currency: EUR
in_stock: null
reviews_count: 8
category: "Kome Stone"
url: https://www.desertcart.pt/products/542553468-k2-professional-and-noise-reuction
store_origin: PT
region: Portugal
---

# STEM-friendly educational kit Ultra-quiet brushless motor 3 lbs extra-large barrel capacity K2:Professional & Noise Reuction

**Brand:** komestone
**Price:** € 191.76
**Availability:** ❌ Out of Stock

## Summary

> 💎 Transform rough stones into museum-quality gems—quietly and effortlessly!

## Quick Answers

- **What is this?** K2:Professional & Noise Reuction by komestone
- **How much does it cost?** € 191.76 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/542553468-k2-professional-and-noise-reuction)

## 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

- • **Max Batch Size:** Generous 3 lbs barrel lets you tumble more stones per cycle—maximize your creative output.
- • **Durable & Mess-Free:** Soft rubber barrel and leak-proof stainless steel lid keep your workspace clean and quiet.
- • **Whisper-Quiet Power:** Cutting-edge brushless motor ensures noise reduction so you can polish indoors without disruption.
- • **Complete Starter Kit:** Includes rough stones, 4-stage grit system, and detailed guide—perfect for beginners and pros alike.
- • **Lifetime Support & Warranty:** 90-day satisfaction guarantee plus 1-year warranty with lifetime accessory replacement and 24/7 US-based support.

## Overview

The KomeStone K2 Elite is a professional-grade rock tumbler featuring an ultra-quiet brushless motor and a large 3 lbs capacity barrel. Designed for both adults and kids, it offers a complete STEM-friendly kit with a 4-stage polishing system, durable rubber barrel, and leak-proof lid. Backed by a 90-day satisfaction guarantee, 1-year warranty, and lifetime accessory support, it’s the perfect tool for hobbyists and jewelry makers seeking pro-level results in a compact, noise-reduced design.

## Description

desertcart.com: 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 : Toys & Games

Review: Great tumbler - I love this tumbler. I haven't had any issues with it since it was bought and I have been running it nonstop. I like that the belt is in a compartment to itself so it doesn't spin lubricant everywhere. You should keep your belt lubricated with a 3in1 oil or clipper oil so they don't dry and break. It's a little quieter than the ones that are out in the open. But it still going to be somewhat loud, it is tumbling rocks. It's durable and seems to be holding up. The barrel has a good thickness to it isn't showing any signs of wear and tear yet. I do like that it has a 3lb storage capacity. It holds a lot more rocks than the other small rock tumblers. It does come with some starter rocks and if you reach out to them after purchasing they will send some free rocks as well. I do believe it is a good value for everything that came with the machine. I think this tumbler is a good addition for any person that is interested in rock tumbling.
Review: Excellent entry to mid level turner for the price. - I got the K2 Elite setup and it's perfect! First tumbler I've ever owned it it's exactly what I needed. I polished up some stones to get the feel for it, but then deburred some small aluminum rings and it handled both jobs perfectly! It's very compact, but also has a large barrel for things. Clear window in the front allows you to see it turning and tell if it's leaking, or if anything else is going on. Accessories that came with it are perfect, too. Emailed them immediately after getting it and within a few days, had myself another bag of really cool stones to polish up. Great communication. Great product. I've used it quite a bit since getting it. I would definitely recommend it. Especially to a beginner who doesn't know a lot about tumbling(like I was). Walks you through everything and makes it all very easy to understand so that you can get right to work. My only slight complaints would be that, it's not actually silent. It definitely makes noise. My wife and I do not run it overnight because of this. But, that's not a really big deal. Also, the amount of ceramic medium that you get is rather small. I ended up just buying some similar stuff from desertcart and have been using it. Once again, though. Not a deal breaker. Overall, great machine. Great price. Does its job. Easy to use. Compact. Versatile for multiple applications. I was not paid for this review. I didn't get the machine for free and am not getting compensated in any way for the review. I just really like it.

## Features

- 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 desertcart'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.
- DIVE INTO THE FUN ROCK TUMBLING: KomeStone rock tumbler is for turning rough raw rocks into smooth gemstones. You’ll be excited to see the rocks change with each cycle—a great lesson in patience for kids or inspiration for jewelry-making moms.
- 2025 NEW UPGRADE & ADVANCED FEATURES: This K2 Elite rock tumbler stands out as the sole option to feature a cutting-edge brushless motor and noise-reduction function among high-end models. This makes it an ideal choice for users sensitive to noise and those who prefer tumbling indoors, even in smaller or shared spaces. Additionally, you'll appreciate the benefits of receiving original manufacturer and brand-direct troubleshooting support, as well as lifetime accessory replacement services.
- 3 LBS EXTRA LARGE CAPACITY & ULTRA QUIETER: Our rock tumbler features 100% soft rubber barrels that effectively absorb the impact of tumbling rocks, resulting in an ultra-quiet operation comparable to a working dishwasher. The generously-sized 3 lbs barrel allows you to polish a larger quantity of rocks in each batch.
- COMES WITH EVERYTHING YOU NEED FOR ROCKS TUMBING: Including the tumbler machine, 3 lbs barrel, 1 lb rough rocks, 1 extra belt (2 in total, one is on the wheel), 4 polishing grits and other accessories. Notably, it also includes a full-color instruction book that provides detailed and easy-to-follow guidance. Even an 8-year-old child can independently learn how to use it with clarity.
- SCIENCE-BACKED POLISHING FOR PRO-LEVEL RESULTS: Achieve museum-quality shine with our 4-stage grit system (60/120/150/1200) and precision ceramic media. The leak-proof stainless steel lid ensures mess-free tumbling, while our exclusive guide unlocks pro techniques.If you need to replace or lubricate the belt, pleasedownload our latest manual for detailed illustratedinstructions. You can also reach out to us obtain themost up-to-date operating guide.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C58TH7W6 |
| Age Range Description | 13 years and up |
| Best Sellers Rank | #35,074 in Toys & Games ( See Top 100 in Toys & Games ) #11 in Kids' Rock Tumblers |
| Brand Name | KomeStone |
| Color | K2 Elite Rock Tumbler (Brushless Motor & Noise Reduction) |
| Customer Reviews | 4.6 out of 5 stars 755 Reviews |
| Educational Objective | K2 Elite Series Ultra Quiet |
| 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 Dimensions | 6.8 x 7.9 x 7.9 inches |
| Item Height | 7.9 inches |
| Item Type Name | Rock Tumbler |
| Item Weight | 3.9 Kilograms |
| Manufacturer | KomeStone |
| Manufacturer Maximum Age (MONTHS) | 1200.0 |
| Manufacturer Minimum Age (MONTHS) | 156.0 |
| 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., Rubber, Stainless Steel, 𝐂𝐏𝐒𝐈𝐀 & 𝐂𝐏𝐂 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 |
| Operation Mode | Manual |
| Power Source | Corded Electric |
| Size | A: K2 Elite |
| Subject Character | Turn raw rocks smooth enough to use for jewlery, crafts, collections, etc., collect rocks from the nature and make jewellery, teach kids learn more about science, geology and mineralogy. |
| Supported Battery Types | No batteries required |
| Theme | Perfect gift choice for the families or friends |

## Product Details

- **Brand:** KomeStone
- **Included Components:** (function(f) {var _np=(window.P._namespace("DetailPageProductOverviewTemplatesJava"));if(_np.guardFatal){_np.guardFatal(f)(_np);}else{f(_np);}}(function(P) {
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}));  1 x tumbler machine, 3 lb barrel, 1.5m AC adapter, rough stones, illustrated tutorial learning guide, extra belt for spare use and 4 polishing grits, sifter, screwdriver, set jewelry Fastenings1 x tumbler machine, 3 lb barrel, 1…    See more
- **Material:** (function(f) {var _np=(window.P._namespace("DetailPageProductOverviewTemplatesJava"));if(_np.guardFatal){_np.guardFatal(f)(_np);}else{f(_np);}}(function(P) {
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}));  Stainless Steel, Cutting-Edge brushless motor, Tyre grade rubber, 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., 𝐂𝐏𝐒𝐈𝐀 & 𝐂𝐏𝐂 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝Stainless Steel, Cutting-Ed…    See more
- **Color:** A: K2 Elite (Brushless Motor & Noise Reduction)
- **Power Source:** Corded Electric

## Images

![K2:Professional & Noise Reuction - Image 1](https://m.media-amazon.com/images/I/8155R7pI+2L.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 1：770
Speed 2：920
Speed 3：1080

**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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great tumbler
*by A***E on December 26, 2025*

I love this tumbler. I haven't had any issues with it since it was bought and I have been running it nonstop. I like that the belt is in a compartment to itself so it doesn't spin lubricant everywhere. You should keep your belt lubricated with a 3in1 oil or clipper oil so they don't dry and break. It's a little quieter than the ones that are out in the open. But it still going to be somewhat loud, it is tumbling rocks. It's durable and seems to be holding up. The barrel has a good thickness to it isn't showing any signs of wear and tear yet. I do like that it has a 3lb storage capacity. It holds a lot more rocks than the other small rock tumblers. It does come with some starter rocks and if you reach out to them after purchasing they will send some free rocks as well. I do believe it is a good value for everything that came with the machine. I think this tumbler is a good addition for any person that is interested in rock tumbling.

### ⭐⭐⭐⭐⭐ Excellent entry to mid level turner for the price.
*by A***E on July 16, 2025*

I got the K2 Elite setup and it's perfect! First tumbler I've ever owned it it's exactly what I needed. I polished up some stones to get the feel for it, but then deburred some small aluminum rings and it handled both jobs perfectly! It's very compact, but also has a large barrel for things. Clear window in the front allows you to see it turning and tell if it's leaking, or if anything else is going on. Accessories that came with it are perfect, too. Emailed them immediately after getting it and within a few days, had myself another bag of really cool stones to polish up. Great communication. Great product. I've used it quite a bit since getting it. I would definitely recommend it. Especially to a beginner who doesn't know a lot about tumbling(like I was). Walks you through everything and makes it all very easy to understand so that you can get right to work. My only slight complaints would be that, it's not actually silent. It definitely makes noise. My wife and I do not run it overnight because of this. But, that's not a really big deal. Also, the amount of ceramic medium that you get is rather small. I ended up just buying some similar stuff from Amazon and have been using it. Once again, though. Not a deal breaker. Overall, great machine. Great price. Does its job. Easy to use. Compact. Versatile for multiple applications. I was not paid for this review. I didn't get the machine for free and am not getting compensated in any way for the review. I just really like it.

### ⭐⭐⭐⭐⭐ Just what I wanted and more :D !
*by Y***N on September 19, 2025*

I purchased the KomeStone K2 Elite Professional Rock Tumbler as a birthday gift for my husband, and I couldn’t be happier with my choice. The machine feels sturdy, professional, and well-designed. The instructions are clear, and the kit comes with everything you need to get started. What impressed me the most, however, was KomeStone’s outstanding customer service. They were kind enough to send me an extra bag of rocks as a gift, which was such a thoughtful gesture. They even followed up by email to make sure I received everything. That level of attention and care is rare and truly appreciated. We have already opened the tumbler and it works perfectly smooth, quiet, and exactly as described. I’m very excited to see the polished stones after the full cycle. Highly recommend both the product and the company! :D 10/10

## 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 – Durable Replacement Belt K2 Elite Model Only / 2 Pcs

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-02-02*