K4 Ultra Quiet Rock Tumbler Kit

KomeStone Double-Barrel K4 Rock Tumbler with Brushless Motor & Noise Cancelling Technology

This is the brand flagship store owned by KomeStone, as the original manufacture and brand outlet, KomeStone brand owns the designs of it’s all rock tumbler models.

KomeStone provides the top-of-line manufacturer advanced professional rock tumbler kits, featuring with all functions and accessories you need to master rocks tumbling and polishing.

The KomeStone K4 Double-Barrel Rock Tumbler is the first and only tumbler equipped with a cutting-edge brushless motor and soundproof cover, providing ultra-quiet operation and a longer lifespan. This innovative design ensures smoother, quieter tumbling, making it ideal for rock collectors, hobbyists, and professionals who require consistent performance.

We offer lifetime troubleshooting support and free replacement parts for all accessories. For more information and to explore the full range of our double-barrel rock tumbler kit, please visit our official KomeStone flagship store.

Thank you for your contribution!

Important：Reach out to us immediately after placing your order and we’ll provide you with a bag of tools to replace belts or as a backup. Plus, you’ll also receive an extra bag of rocks to get more practice right away!

Notice: If there is any part missing, please kind take a moment to reach out for a replacement or the compensation.

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

Rock tumblers transform raw rocks into stunning gems for jewelry, crafting, and collections. To achieve an exceptional shine, use high-quality grits, soap water, mineral oil, and follow the precise tumbling steps.

If you need tips for getting smoother rocks, feel free to reach out to our team—we’re here to help! Remember, practice makes perfect.

FAQs About KomeStone Rock Tumbler Kit

1. How Much Weight Can Each Barrel Hold?

• Each barrel can hold up to 3.5 lbs of rocks, so with both barrels, you can tumble a total of 7 lbs. Including water, polishing powder, ceramic pellets, and other additives, each barrel can handle up to 7 lbs, and together, both barrels can support a total weight of 14 lbs.

2. Will the Belt Break?

• The timing belts are made from rubber and fiberglass (9 strands), making them strong and resistant to breakage. These belts are designed to last and won’t slip easily. While they may show some wear over time, it won’t affect their performance. Each tumbler comes with 2 belts—one installed and one as a backup. If your belt ever breaks, just reach out to us, and we’ll send you the replacement at no cost.

3. 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.

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