---
product_id: 487338251
title: "Professional Brushless Rock Tumbler – Quiet 2.5LB Rotary Rock Polisher for Hobbyists & Collectors with High-Performance Motor, Adjustable Speed, Timer, Memory Function & Full Accessories Included"
brand: "komestone"
price: "$218.42"
currency: USD
in_stock: true
category: "Kome Stone"
url: https://www.desertcart.us/products/487338251-professional-brushless-rock-tumbler-quiet-2-5lb-rotary-rock-polisher
store_origin: US
region: United States of America
---

# 2.5LB large capacity rubber barrel 9-day programmable timer & memory 20,000+ hrs brushless motor lifespan Professional Brushless Rock Tumbler – Quiet 2.5LB Rotary Rock Polisher for Hobbyists & Collectors with High-Performance Motor, Adjustable Speed, Timer, Memory Function & Full Accessories Included

**Brand:** komestone
**Price:** $218.42
**Availability:** ✅ In Stock

## Summary

> 🪨 Elevate Your Rock Game: Pro-Grade Polish Meets Millennial Precision

## Quick Answers

- **What is this?** Professional Brushless Rock Tumbler – Quiet 2.5LB Rotary Rock Polisher for Hobbyists & Collectors with High-Performance Motor, Adjustable Speed, Timer, Memory Function & Full Accessories Included by komestone
- **How much does it cost?** $218.42 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/487338251-professional-brushless-rock-tumbler-quiet-2-5lb-rotary-rock-polisher)

## 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 Mastery:** 2.5LB thick rubber barrel lets you process 2.5× more stones per run—perfect for serious collectors craving efficiency and quality.
- • **Endurance Engineered:** Brushless motor delivers 3X longer life with whisper-quiet, low-vibration operation—polish like a pro without the noise.
- • **All-Inclusive Pro Kit:** Comes fully loaded with 9 rock types, 4 polishing grits, ceramic media, and accessories—start your gem-polishing journey day one, no extras needed.
- • **Precision Control Hub:** Smart LCD with 3-speed settings, 9-day timer, and memory function ensures flawless, uninterrupted polishing cycles every time.
- • **Built to Last & Maintain:** Military-grade materials plus user-replaceable belts keep your tumbler running peak performance for years—invest once, polish forever.

## Overview

The KomeStone K1 Pro Professional Brushless Rock Tumbler features a durable brushless motor with 20,000+ hours lifespan, a 2.5LB large-capacity rubber barrel, and advanced controls including a 9-day programmable timer and memory function. Designed for hobbyists and collectors, it includes a complete 4-stage polishing system, full accessory kit, and user-friendly maintenance options, delivering quiet, efficient, and professional-grade rock polishing with a 90-day money-back guarantee and 1-year warranty.

## Description

Buy Professional Brushless Rock Tumbler – Quiet 2.5LB Rotary Rock Polisher for Hobbyists & Collectors with High-Performance Motor, Adjustable Speed, Timer, Memory Function & Full Accessories Included: Tumbling Media - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- The Original Brushless Rock Tumbler — Pioneered By KomeStone — KomeStone brought brushless motor technology to rock tumblers first — the K1 Pro is where it started. The professional-grade brushless motor delivers 40,000+ hours of operation, 3X longer lifespan than traditional brushed motors, with less heat, less vibration, and quieter performance from day one.
- Professional-Grade Controls — Smart LCD, 9-Day Timer & Memory Function — Features a smart LCD display, 9-day programmable timer with automatic shutoff, 3-speed precision controls, and a memory function that resumes your cycle after any power interruption. Military-grade thickened rubber barrel adds extra durability and noise reduction — built for professional hobbyists and serious collectors who demand more from every batch.
- 2.5LB Large Capacity — Polish More, Faster — The extra-large 2.5LB rubber barrel lets you polish 2.5× more rocks per batch than standard 1LB tumblers. Ideal for dedicated collectors and gem enthusiasts processing precious agates, premium jasper, crystals, rough gemstones, or sea glass. The smoother brushless rotation helps protect delicate materials while maximizing polishing consistency and batch efficiency.
- Complete Pro Kit — Everything Included For Day One — Includes the K1 Pro tumbler, 2.5LB rubber barrel, 1LB rough rocks (9 types), 4 polishing grits, ceramic media, sifter, jewelry fastenings, 2 extra belts, and a full-color illustrated guidebook. Unbox, load, and start your first professional-grade polishing cycle immediately.
- Advanced 4-Stage System + Pro Polishing Techniques → gem-quality shine — Includes a complete Advanced 4-Stage Grit System (60/120/150/1200) with precision ceramic media and a leak-proof stainless-steel lid. Our exclusive Pro Polishing Techniques guidebook covers advanced methods to help you achieve gem-quality shine from every batch.
- Easy Maintenance — User-Replaceable Drive Belt — Combined with our brushless motor, this user-replaceable belt system keeps your professional station running at peak performance year after year. Designed for hobbyists and collectors who want reliable long-term performance from every polishing cycle.
- 𝟗𝟎-𝐃𝐚𝐲 𝐌𝐨𝐧𝐞𝐲-𝐁𝐚𝐜𝐤 𝐆𝐮𝐚𝐫𝐚𝐧𝐭𝐞𝐞 & 𝟏-𝐘𝐞𝐚𝐫 𝐖𝐚𝐫𝐫𝐚𝐧𝐭𝐲: 𝐑𝐢𝐬𝐤-𝐅𝐫𝐞𝐞 𝐏𝐮𝐫𝐜𝐡𝐚𝐬𝐞 — Your K1 Pro is backed by a 90-day satisfaction guarantee and a 1-year warranty. Our US-based customer service team provides 24/7 hassle-free replacement or refund support — shop with complete confidence.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B69CK2VG |
| Age Range Description | 13 years and up |
| Battery Description | No batteries required |
| Best Sellers Rank | #4,604 in Toys & Games ( See Top 100 in Toys & Games ) #2 in Kids' Rock Tumblers |
| Brand Name | KomeStone |
| Customer Reviews | 4.3 4.3 out of 5 stars (3,796) |
| Educational Objective | Creative Skills |
| Included Components | 1 pound of rocks & 4 bages of polishing grits & ceramic pellets, 1 rock tumbler base & 1 rubber barresl, 2 PU belts & user instructions, jewelry fastenings & adaptor & screwdriver & mesh strainer |
| Is Assembly Required | No |
| Item Dimensions | 11.22 x 9.02 x 5.17 inches |
| Item Type Name | Rock Tumbler |
| Item Weight | 2.5 Pounds |
| Manufacturer | KomeStone |
| Manufacturer Maximum Age (MONTHS) | 1200.0 |
| Manufacturer Minimum Age (MONTHS) | 156.0 |
| Manufacturer Part Number | CA-KS0613RT14 |
| Manufacturer Warranty Description | 2-Year Warranty for free exchange against manufacturing defects |
| Material Type | Brushless motor, Top quality of stainless steel, Tyre grade rubber, 𝐂𝐏𝐒𝐈𝐀 & 𝐂𝐏𝐂 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 |
| Model Number | K1 Pro |
| Set Name | K1 Pro |
| Size | 11.3 x 9.17 x 5.87 inches |
| Theme | Geology |
| Unit Count | 1.0 Count |

## Images

![Professional Brushless Rock Tumbler – Quiet 2.5LB Rotary Rock Polisher for Hobbyists & Collectors with High-Performance Motor, Adjustable Speed, Timer, Memory Function & Full Accessories Included - Image 1](https://m.media-amazon.com/images/I/81kcSw1CWcL.jpg)
![Professional Brushless Rock Tumbler – Quiet 2.5LB Rotary Rock Polisher for Hobbyists & Collectors with High-Performance Motor, Adjustable Speed, Timer, Memory Function & Full Accessories Included - Image 2](https://m.media-amazon.com/images/I/81nMAm0SwHL.jpg)
![Professional Brushless Rock Tumbler – Quiet 2.5LB Rotary Rock Polisher for Hobbyists & Collectors with High-Performance Motor, Adjustable Speed, Timer, Memory Function & Full Accessories Included - Image 3](https://m.media-amazon.com/images/I/815lKtceQIL.jpg)
![Professional Brushless Rock Tumbler – Quiet 2.5LB Rotary Rock Polisher for Hobbyists & Collectors with High-Performance Motor, Adjustable Speed, Timer, Memory Function & Full Accessories Included - Image 4](https://m.media-amazon.com/images/I/81ca3uSXgFL.jpg)
![Professional Brushless Rock Tumbler – Quiet 2.5LB Rotary Rock Polisher for Hobbyists & Collectors with High-Performance Motor, Adjustable Speed, Timer, Memory Function & Full Accessories Included - Image 5](https://m.media-amazon.com/images/I/81-CQF0cBnL.jpg)

## Available Options

This product comes in different **Color** options.

## Frequently Bought Together

- KomeStone K1 Pro Professional Cutting-Edge Brushless Motor Advanced Rock Tumbler Polisher Kit, Extra Large 2.5Lb Barrel with 3-Speed Motor 9-Day Timer, 6 Belts, Rough Gemstones, 4 Polishing Grits etc.
- Rock Tumbler Polishing Grits and Ceramic Tumbling Media Kit | Essential for Polishing, 4 Steps Rock Tumbling Refill Media, Polish up to 25 lbs of Rocks, Work with Any Rock Tumblers, for More Tumbles
- Rock Tumbler Belt 5-Pack for KomeStone K1, K1 Pro, K3 – Includes 2 Upgraded PU Belts + 3 Rubber Belts – Durable Replacement Kit, Not for K2 or K4

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-16*