K1 Pro Professional Cutting-Edge Brushless Motor Advanced Rock Tumbler Polisher Kit, Large 2.5Lb Barrel with 3-Speed & 9-Day Timer, Includes All Accessories, Ideal Gift for Adults & Collectors

This is the brand flagship store owned by KomeStone, the original manufacturer and official outlet for all KomeStone-designed rock tumblers. As a leading innovator in this category, KomeStone has been consistently recognized for delivering advanced, dependable, and high-performance rock tumbling solutions.

KomeStone provides top-of-the-line, manufacturer-grade professional rock tumbler kits, equipped with all functions and accessories needed to master rock tumbling and polishing. The KomeStone K1 Pro features our cutting-edge brushless motor design — the first rock tumbler built with this technology — offering more than 20,000 hours of work time and a lifespan beyond 10 years.

We understand that rock tumbling is more than a hobby — it’s an investment. That’s why we stand behind every tumbler we sell with lifelong support, including replacement parts and technical guidance. Even after your warran*ty expires, we won’t disappear. You can count on us to keep your machine running smoothly for years to come.

Your trust means everything to us. We’re here — not just to sell, but to support. Always.

Each stone hides a story waiting to be revealed. The moment when rough rocks turn smooth and begin to shine is pure magic — a reward for your patience, curiosity, and creativity. Watching your collection come to life is not just satisfying — it’s inspiring.

Rock tumbling isn’t just about polishing stones — it’s about the process of discovery. Many families tell us it has become a shared hobby that helps children build focus, patience, and an appreciation for hands-on learning. Every polished gem becomes a reminder that beautiful things take time and care.

To keep your adventure going, explore our refill grit sets — available in 4 lb, 6 lb (with ceramic media), and 10 lb (with ceramic & plastic pellets) — perfect for larger projects or long-term tumbling. And for that final, glassy brilliance, try our 8000 / 12000 grit aluminum oxide polish in your next batch.

Welcome to a world of exquisite craftsmanship! Share your captivating stone creations with us, and we'll proudly showcase them across our Amazon details page and vibrant social media platforms. Your talent deserves a spotlight.

Should any concerns arise, rest assured, we're dedicated to swift solutions. Instead of frustration, kindly connect with us for assistance.

You may not know: Rock tumblers transform raw rocks into stunning gems for jewelry, crafting, and collections. For an exceptional shine, explore the art of polishing with high-quality grits, soap water, mineral oil, and meticulous steps. Practice perfects the process.

Dig Deeper:

• Is operating the rock tumbler effortless?

Absolutely. Inside your package, discover a full-color Instruction book, guiding you through every step. It's so clear, even a 4-year-old can navigate it.

• Will the belts break?

Currently, all of our rock tumblers come with PU belts, which is a new and upgraded, more durable option. Generally, these belts do not break, although special circumstances may occur. However, if the belt breaks, please replace it with one of the PU belts from the pack. After placing your order or receiving the product, please email to our after-sales service center to receive the additional 5 spare belts. You can find the specific after-sales email on the main image or in the manual. Rest assured, for any products issues, please reach out to us, and we will handle them properly. We are in the process of replacing all belts with PU belts, meaning that future belts are unlikely to break.

• Encountering a hiccup with your rock tumbler?

First, consult our FAQs in the instruction book or on this page. For product concerns, connect with us directly. Our dedication to unparalleled service ensures swift resolutions.

• Ensure you include the polishing grits kit in your cart alongside this rock tumbler – together, they create the ideal combination for an impeccable finish, do not forget to add it into your cart.

Your satisfaction is paramount. Trust that we're dedicated to elevating your experience and swiftly addressing every matter.

Trusted Choice in Rock Tumbling — Recognized for Quality & Performance

Bring Every Stone to Life — Your Next Discovery Awaits

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