---
product_id: 456405375
title: "C1 Rock Tumbler Kit - Professional Large 2.5LB Capacity, Up to 5X More Noise Cancelling, Adjustable Timer & Speed with Full Accessories & Memory Function"
brand: "koolstone"
price: "210485CFA"
currency: XOF
in_stock: true
reviews_count: 5
category: "Kool Stone"
url: https://www.desertcart.sn/products/456405375-c1-rock-tumbler-kit-professional-large-2-5lb-capacity-up
store_origin: SN
region: Senegal
---

# 75% noise reduction 9-day adjustable timer 2.5LB large capacity C1 Rock Tumbler Kit - Professional Large 2.5LB Capacity, Up to 5X More Noise Cancelling, Adjustable Timer & Speed with Full Accessories & Memory Function

**Brand:** koolstone
**Price:** 210485CFA
**Availability:** ✅ In Stock

## Summary

> 💎 Turn Rough Rocks Into Polished Perfection — Join the Rock Revolution!

## Quick Answers

- **What is this?** C1 Rock Tumbler Kit - Professional Large 2.5LB Capacity, Up to 5X More Noise Cancelling, Adjustable Timer & Speed with Full Accessories & Memory Function by koolstone
- **How much does it cost?** 210485CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/456405375-c1-rock-tumbler-kit-professional-large-2-5lb-capacity-up)

## Best For

- koolstone enthusiasts

## Why This Product

- Trusted koolstone brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Polish More, Wait Less:** Large 2.5LB barrel lets you tumble more stones per batch, maximizing your creative output.
- • **Whisper-Quiet Operation:** Rubber barrel reduces noise by up to 75%, perfect for home or office without disruption.
- • **All-Inclusive Starter Kit:** Comes with rough stones, polishing grits, ceramic media, and jewelry fastenings—everything to start your gem journey.
- • **Built to Last & Backed by Warranty:** Durable design with replaceable belts and a 1-year warranty ensures your investment shines long-term.
- • **Precision Control at Your Fingertips:** 3-speed settings and a 9-day timer with memory function deliver flawless, customized polishing.

## Overview

The KoolStone C1 Rock Tumbler Kit is a professional-grade, large-capacity (2.5LB) rock tumbler designed for quiet, efficient polishing with up to 75% noise reduction. Featuring 3-speed controls, a 9-day adjustable timer with memory, and a full accessory kit including rough stones, polishing grits, and jewelry fastenings, it offers a complete, user-friendly experience ideal for hobbyists and families. Backed by a 1-year warranty and easy maintenance, it’s the perfect tool to transform ordinary rocks into stunning gemstones.

## Description

This large 2.5LB capacity tumbler, 75% quieter than most plastic barrels, comes with a 1-year warranty for your peace of mind. The kit includes a rock tumbler base, a rubber barrel, 1LB of assorted rough rocks, 6 belts for spare use, 4 bags of polishing grits, a bottle of ceramic tumbling media, a power adapter, jewelry fastenings, a mesh strainer, and an illustrated learning booklet. The 3-speed controls and 9-day timer with automatic shutoff and memory function ensure faster polishing time and better polishing results.

Review: Great small rock tumbler…. - Great product. Works well, tumbles relatively quietly in the rubber drum. Easy to load/unload rocks for the various stages. Easy to set up the duration in days and speed required. Excellent instruction manual. Would recommend to buy for anyone interested in seeing the beauty hidden away in some fairly common rocks..
Review: Solid construction - This is well built and not at all a toy. We're only partway through our first set of rocks but we eagerly anticipate each new tumble. There was an issue with the drum but the company very quickly addressed it and sent a replacement. Very impressed.

## Features

- Turn Ordinary Rocks Into Beautiful Polished Gemstones At Home – C1 Rock Tumbler turn rough rocks into polished gems, then you will be very excited to see the stones change with each cycle. That's a fun process of rock tumbling and a family little project for parent-child endeavor.
- Large 2.5LB Capacity With Up To 75% Noise Reduction – The updated KoolStone Rock Tumbler features a large 2.5LB barrel, perfect for polishing multiple stones in one batch. Holds more rocks than most beginner tumblers. The rubber barrel is 75% quieter than typical plastic barrels, making it ideal for home or classroom use.
- Faster Polishing Time & Better Polishing Results – 3-speed controls (providing more granular tumbling results), a 9-day timer (with automatic shutoff feature and memory function), all displayed on clear screen, letting you easily hone your settings for precise tumbling each time.
- Everything You Need For Tumbling Is Here – C1 Rock Tumbler has everything you need to create polished gemstones. Rock tumbler, 2.5LB capacity rubber barrel, 1LB for 9 different types of rough gemstones, 3 belts and 4 polishing grits and ceramic contact media, sifter, jewelry fastenings, and illustrated tutorial guide. For longer use and better results, pair it with KoolStone’s 4LB Professional Polishing Grit (sold separately).
- KoolStone C1 Series – Trusted by Beginners, Backed by Experts. Start your rock tumbling journey with KoolStone, the brand trusted by thousands of families and hobbyists. The C1 Rock Tumbler is a classic model that balances reliable performance with all-in-one convenience. From the classic C1 to the Pro, Pro Max, and Pro Ultra, KoolStone continues to evolve with exclusive designs and upgraded performance for every rock enthusiast — ready to start your rock tumbling journey.
- Official KoolStone Warranty – 𝟏 𝐘𝐞𝐚𝐫 𝐂𝐨𝐯𝐞𝐫𝐚𝐠𝐞 & 𝟗𝟎-𝐃𝐚𝐲 𝐑𝐢𝐬𝐤-𝐅𝐫𝐞𝐞 𝐓𝐫𝐢𝐚𝐥. Your purchase is protected by KoolStone’s official 𝟏-𝐲𝐞𝐚𝐫 𝐰𝐚𝐫𝐫𝐚𝐧𝐭𝐲 and a 𝟗𝟎-𝐝𝐚𝐲 𝐦𝐨𝐧𝐞𝐲-𝐛𝐚𝐜𝐤 𝐠𝐮𝐚𝐫𝐚𝐧𝐭𝐞𝐞. Shop with confidence — we’re here to support your tumbling journey.
- Easy Maintenance – The durable drive belt is designed to be replaceable, making maintenance simple and extending the life of your rock tumbler.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09YM33DGD |
| Age Range Description | Suitable for children aged 13 and above |
| Best Sellers Rank | #209,252 in Kitchen ( See Top 100 in Kitchen ) #3,162 in Tumblers & Water Glasses |
| Brand Name | KoolStone |
| Color | Brush Edition: C1 |
| Customer Reviews | 4.5 out of 5 stars 2,193 Reviews |
| EU Spare Part Availability Duration | 1 Years |
| Educational Objective | STEM |
| Included Components | 1-Year Warranty Card, Illustrated Learning Booklet, 1A Power Adapter, Jewelry Fastenings, Mesh Strainer, Screwdriver, 1LB Assorted Rough Rocks, 3 Belts for Spare Use, 4 Bags of Polishing Grits, 1 Bottle Ceramic Tumbling Media, Rock Tumbler Base, 2.5LB Capacity Rubber Barrel |
| Indoor Outdoor Usage | Indoor |
| Is Assembly Required | No |
| Item Dimensions | 28.5 x 22.9 x 14.5 centimeters |
| Item Type Name | Rock Tumbler |
| Item Weight | 2.84 Kilograms |
| Manufacturer | KoolStone |
| Manufacturer Maximum Age (MONTHS) | 1188.0 |
| Manufacturer Minimum Age (MONTHS) | 48.00 |
| Manufacturer Part Number | KS20220422 |
| Material Type | metal, metal 1.）Tyre grade rubber barrel top-quality stainless steel. 2.) If you received package missing parts or damaged no worries please feel free to reach out at support@ikoolstone.com to take replacemenet. 3.) Any problems before purchasing please reach out at support@ikoolstone.com to get answer. |
| Model Number | KS20220422 |
| Number of Batteries | 1 AA batteries required. |
| Number of Players | 1 |
| Operation Mode | Automatic |
| Power Source | manual |
| Set Name | C1 Rock Tumbler Kit |
| Size | L |
| Supported Battery Types | No batteries required |
| Theme | Perfect gift for rock lovers and hobbyists to create stunning polished stones. |
| Unit Count | 1 Count |

## Images

![C1 Rock Tumbler Kit - Professional Large 2.5LB Capacity, Up to 5X More Noise Cancelling, Adjustable Timer & Speed with Full Accessories & Memory Function - Image 1](https://m.media-amazon.com/images/I/71G71D12JbL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great small rock tumbler….
*by A***S on 30 March 2026*

Great product. Works well, tumbles relatively quietly in the rubber drum. Easy to load/unload rocks for the various stages. Easy to set up the duration in days and speed required. Excellent instruction manual. Would recommend to buy for anyone interested in seeing the beauty hidden away in some fairly common rocks..

### ⭐⭐⭐⭐⭐ Solid construction
*by D***Y on 4 May 2026*

This is well built and not at all a toy. We're only partway through our first set of rocks but we eagerly anticipate each new tumble. There was an issue with the drum but the company very quickly addressed it and sent a replacement. Very impressed.

### ⭐⭐⭐⭐ Study good quality
*by N***S on 8 November 2025*

Grandson loves his tumbler

## Frequently Bought Together

- KoolStone C1 Rock Tumbler Kit - Professional Large 2.5LB Capacity, Up to 5X More Noise Cancelling, Adjustable Timer & Speed with Full Accessories & Memory Function, Ideal for Adults Kids
- Blue Marble National Geographic Rock Tumbler Grit and Polish Refill Kit - Tumbling Grit Media, Polish Up to 20 lbs. of Rocks, Works with Any Rock Polisher, Rock Tumbler Supplies
- 5 Packs of Rock Tumbler Replacement Belts, Only Compatible with KoolStone C1, C1 Pro & C3 Rock Tumbler, 78 * 4mm

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-07-12*