---
product_id: 542553468
title: "K2 Brushless Rock Tumbler for Adults & Kids, 3Lb Ultra Quiet Kit"
brand: "komestone"
price: "$394.50"
currency: USD
in_stock: true
category: "Kome Stone"
url: https://www.desertcart.us/products/542553468-k2-brushless-rock-tumbler-for-adults-and-kids-3lb-ultra
store_origin: US
region: United States of America
---

# 9-day programmable timer 6X quieter operation Brushless motor tech K2 Brushless Rock Tumbler for Adults & Kids, 3Lb Ultra Quiet Kit

**Brand:** komestone
**Price:** $394.50
**Availability:** ✅ In Stock

## Summary

> 🔮 Transform rough stones into dazzling treasures—quietly, safely, and effortlessly!

## Quick Answers

- **What is this?** K2 Brushless Rock Tumbler for Adults & Kids, 3Lb Ultra Quiet Kit by komestone
- **How much does it cost?** $394.50 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/542553468-k2-brushless-rock-tumbler-for-adults-and-kids-3lb-ultra)

## 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

- • **Family-Safe Design:** Protective cover keeps little hands safe, making it ideal for kids 8+ and STEM learning at home.
- • **Brushless Motor Power:** Advanced brushless motor ensures smooth, long-lasting performance with less heat and wear.
- • **Maximized 3LB Capacity:** 50% more tumbling space than entry models—polish more stones per batch, from agates to crystals.
- • **Whisper-Quiet Tumbling:** Runs up to 6X quieter with noise-reduction cover & soft rubber barrel—perfect for apartments and shared spaces.
- • **Smart Controls & Memory:** 3 speeds, 9-day timer, and power-loss memory deliver consistent, hands-free polishing every time.

## Overview

The KomeStone K2 3LB Brushless Rock Tumbler is a premium, ultra-quiet polishing kit designed for adults and kids. Featuring a brushless motor for durability, a noise-reduction cover for peaceful operation, and a 3LB rubber barrel for larger batches, it offers smart controls with a 9-day programmable timer and memory recall. Complete with polishing grits, rough stones, and a detailed guide, it’s perfect for family STEM projects, hobbyists, and geology enthusiasts seeking professional results at home.

## Description

desertcart.com: KomeStone K2 Brushless Rock Tumbler for Adults & Kids, 3Lb Ultra Quiet Kit | Professional Brushless Rock Polisher, Up to 6X Noise Reduction, Rubber Barrel, 3 Speeds, 9-Day Timer, Memory, Complete Kit : Toys & Games

## Features

- Ultra Quiet Performance for Home Tumbling — The K2 Quiet Elite runs up to 6X quieter than standard rock tumblers. A dedicated noise-reduction cover seals around the barrel to contain vibration, while soft rubber barrel walls cut tumbling noise by up to 75% vs. plastic barrels. Run it in an apartment, a shared workspace, or overnight without disturbing — ideal for families, beginners, and hobbyists who value a peaceful environment.
- Premium Brushless Motor for Long-Term Reliability — The K2 Elite runs on a brushless motor designed for smoother barrel rotation, lower heat output, and significantly reduced wear compared to brushed alternatives. No brushes means fewer moving parts to replace, a longer service life, and more consistent torque across every polishing stage — so stones polish evenly from the first batch to the hundredth. For hobbyists and collectors who treat their equipment as a long-term investment, the brushless drive system is the key difference between a seasonal toy and a permanent workshop tool.
- 3LB Capacity for Serious Hobby Projects — The K2 Elite's 3LB rubber barrel gives you 50% more capacity than 2LB entry-level models — more stones per cycle means fewer batches and more time enjoying finished results. Handles agates, jasper, quartz, river rocks, crystals, and most popular tumbling stones. The soft rubber walls protect stones from excessive impact while keeping noise low. Ideal for rock collectors and lapidary hobby projects where batch size and stone variety matter.
- Smart Controls with Settings Recall — Dial in the right tumbling speed for each polishing stage with 3 selectable speed settings. The 9-day programmable timer runs each stage automatically and shuts off when complete. Settings Recall stores your timer and speed configuration — so if power is interrupted, the K2 Elite picks up exactly where it left off without needing to be reprogrammed. Consistent settings across every stage mean predictable, repeatable results whether you're in your first batch or your fiftieth.
- Complete Professional Hobby Kit — Everything needed to start tumbling is included in the box — the K2 Elite tumbler, 3LB soft rubber barrel, 1LB of rough gemstones (9 varieties), complete 4-stage polishing grit set, sifter, 2 drive belts (1 spare), jewelry finding, and a full-color illustrated guidebook with step-by-step instructions. Designed for hobbyists who want professional-quality results from their very first batch.
- Replaceable Key Parts for Long-Term Ownership — Core components are designed to be individually replaceable, not discarded. The base, control panel, drive belt, rubber barrel, and metal lid kit are each available as replacement parts directly from KomeStone, with no planned end to parts supply. The K1 isn't a one-season purchase — it's a permanent part of your hobby setup.
- 90-Day Money-Back Guarantee & 1 Year Warranty — Risk Free Purchase — Shop with complete confidence. This rock tumbler kit is backed by a 90-day satisfaction guarantee and a 1-year warranty. Miss desertcart's return window? Our US-based customer service team offers 24/7 hassle-free replacement or refund support — we've got you covered.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C58TH7W6 |
| Best Sellers Rank | #12,759 in Toys & Games ( See Top 100 in Toys & Games ) #4 in Kids' Rock Tumblers |
| Brand | KomeStone |
| Brand Name | KomeStone |
| Color | A: K2 Elite (Brushless Motor & Noise Reduction) |
| Customer Reviews | 4.5 out of 5 stars 931 Reviews |
| 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 ) 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 ) See more |
| Item Type Name | Rock Tumbler |
| Item Weight | 3.9 kg |
| Manufacturer | KomeStone |
| Manufacturer Part Number | CA-KS0515RT46 |
| Material | 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., Stainless Steel, Tyre grade rubber, 𝐂𝐏𝐒𝐈𝐀 & 𝐂𝐏𝐂 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 Material 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., Stainless Steel, Tyre grade rubber, 𝐂𝐏𝐒𝐈𝐀 & 𝐂𝐏𝐂 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 See more |
| 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., Stainless Steel, Tyre grade rubber, 𝐂𝐏𝐒𝐈𝐀 & 𝐂𝐏𝐂 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 |
| Model Number | CA-KS0515RT46 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Power Source | Corded Electric |
| Specific Uses For Product | Jewelry, Rocks |
| Unit Count | 1 Count |

## Product Details

- **Brand:** KomeStone
- **Color:** Black
- **Power Source:** Corded Electric

## Images

![K2 Brushless Rock Tumbler for Adults & Kids, 3Lb Ultra Quiet Kit - Image 1](https://m.media-amazon.com/images/I/81VV5J-AqZL.jpg)

## Available Options

This product comes in different **Set** 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.

## 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 United States of America*
*Store origin: US*
*Last updated: 2026-11-01*