KomeStone K1 Quiet Rock Tumbler Kit for Adults, Kids & Families
- Trusted by 3,000,000+ Hobbyists — Ranked #1 by Independent Review Publications — Named the top rock tumbler by NBC's Today, BestReviews, BuyerGuide, and more (2022–2026) — recognized for performance, reliability, and value. With over 3,000,000 orders shipped across KomeStone's lineup as of July 2026, it's the trusted choice for adults, hobbyists, and families who want a dependable tumbler that delivers real results.
- Designed for Adults, Kids, Teens, and Families — Built for anyone who wants a quiet, reliable tumbler for everyday home use. The 2.5 lb capacity makes it the ideal first step up from a standard 1 lb beginner kit — and with dedicated US-based support and replaceable components, the K1 is a machine adults and hobbyists trust, kids and teens can start on, and beginners can genuinely learn from.
- 75% Quieter Rubber Barrel with 2.5 lb Capacity — Process agates, jasper, quartz, gemstones, sea glass, and most popular tumbling stones. The 2.5 lb barrel gives you 2.5× the capacity of a standard 1 lb barrel, letting you polish more stones per batch. Its thick rubber construction cushions rock impact and reduces noise by up to 75% compared to plastic barrels — comparable to a running dishwasher — for a comfortable tumbling experience in living rooms, garages, workshops, and hobby spaces.
- Smart Controls with Pause, Resume and Settings Memory — Choose from 3 speed settings and program each polishing stage on the clear LCD screen with the adjustable 9-day digital timer. Pause the tumbler to check your stones, then resume without restarting your settings. Automatic shutoff stops the cycle when complete, while the memory function restores your settings after any power interruption — the perfect, hassle-free control system for beginners and hobbyists alike. Set your stage, walk away, and come back to perfectly tumbled stones.
- Complete Rock Tumbler Kit — Ready to Unbox and Start on Day One — Includes the K1 tumbler, a thick 2.5 lb rubber barrel, 1 lb of rough rocks in 9 varieties sourced from around the world, four bags of 60/120/150/1200 polishing grit, ceramic tumbling media, a mesh strainer, jewelry findings, 3 drive belts, and a full-color illustrated guide. No additional purchases needed — everything required to begin your first polishing batch is already in the box.
- Step-by-Step Guidance for Every Level — The included full-color guidebook covers everything from initial setup to finishing your first batch — with detailed polishing techniques, troubleshooting steps, and practical tips like adding soapy water during polishing stages. Our US-based support team is also available anytime for polishing questions or machine help. Together, the comprehensive guidance and dedicated support help adults, beginners, teens, and families make real progress — from rough stones to finished keepsakes. Makes a complete geology or STEM gift for rock enthusiasts of all ages.
- Replaceable Key Parts for Long-Term Ownership — Core components are designed to be individually replaceable, not discarded. The motor, 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. Your K1 is backed by a 90-day satisfaction guarantee and a 1-year warranty. Miss 's return window? Our US-based customer service team offers 24/7 hassle-free replacement or refund support — we've got you covered.
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Save 10% when you buy two or more items.
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Get 5% off your next purchase.
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Enjoy free delivery on orders above $200.
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Orders are processed and shipped from Canberra
Estimate delivery times: 12-26 days (International).
3-6 days (Domestic)
3-6 days (Domestic)
Guaranteed Safe Checkout
30-Day Return Guarantee
Confidence-backed purchases with 30-day return support.
Confidence-backed purchases with 30-day return support.
Free return pickup available
We’ll handle returns from your doorstep at no extra cost.
AUD |
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Category |
Learning & Education , Rock Tumblers |
Tags |
Estimated shipping
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Safety Information
Keep Hair Away! If you encounter any product issues, such as a broken belt, machine malfunction, missing parts, or any other concerns, please reach out to our after-sales service center for help. We are committed to resolving any problems promptly and efficiently, with customer satisfaction as our top priority.
Directions
Includes a full-color guide with step-by-step instructions on how to use the rock tumbler kit to polish rocks into smooth gemstones.
Product details
| Main Specification | |
|---|---|
| Included Components | 1 pound of rocks & 4 bages of polishing grits & ceramic pellets or 1 rock tumbler base & 1 rubber barrel or 2 PU belts & user instructions or jewelry fastenings & adaptor & screwdriver & mesh strainer |
| Theme | Lapidary Tool for DIY Jewelry & Crafts or Perfect gift choice for the families or friends or Rock Tumbler Kit for Polishing Stones or Rock Tumbler Starter Kit with Timer & Motor or Rock Tumbler with Grits and Accessories or Stone Polishing Machine for Kids & Adults |
| Educational Objective | Teaching geology or creative design or patience |
| Manufacturer | KomeStone |
| Unit Count | 1 Count |
| Brand | KomeStone |
| Number of Players | 1 |
| Operation Mode | Manual |
| Power Source | AC adapter |
| Colour | Black |
| Size | Large |
| Product information | |
| Manufacturer recommended age | 8 Years And Up |
| Set Name | KomeStone K1 Professional Large 2.5LB Capacity Edition |
| Technical Details | |
| Material Type | Japanese carbon motor or Top quality of stainless steel or Tyre grade rubber or 𝐂𝐏𝐒𝐈𝐀 & 𝐂𝐏𝐂 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 |
| Manufacturer Part Number | CA-KS0107RT17 |
| Item details | |
| Age Range Description | 8 Years And Up |
| Model Number | K1 |
| Indoor Outdoor Usage | Indoor |
| Measurements | |
| Item Dimensions | 11.22 x 9.02 x 5.71 inches |
| Others | |
| Item Highlight | Reliable 2.5Lb Rotary Rock Polisher or Thick Rubber Barrel or 3 Speeds or 9-Day Timer or Memory Function or Complete Gem Polishing Kit |
| Product Type | Rock Tumblers |
| Supported Battery Types | No batteries required |
Shipping & Delivery
At GofinchKart Australia, we aim to deliver your order quickly and safely.
Domestic Shipping (Australia):
Orders are typically delivered within 3–7 business days.
International Shipping:
Estimated delivery time is 12–26 business days, depending on the destination and customs processing.
Once your order has been dispatched, you will receive a tracking number. Delivery times may vary during public holidays or due to unforeseen delays.