KomeStone Professional Rock Tumbler Kit – 4lb Barrel, Brushless Motor, Adjustable Speed, 9-Day Timer

Professional-Grade Rock Tumbling for Adults & Collectors

Discover a robust, long-lasting rock tumbler kit designed for serious hobbyists and curious minds. The KomeStone Professional Rock Tumbler Kit combines a large 4-pound rubber barrel with a brushless motor and a heavy metal base to support extended polishing sessions with steady performance. Its design emphasizes reliability, low vibration, and practical ergonomics, making it a strong centerpiece for a workshop, studio, or dedicated hobby space. This kit isn’t a classroom toy; it’s a comprehensive setup built to handle more ambitious polishing projects with consistent results.

Durability meets quiet efficiency

Built to endure, the brushless motor offers longer life and cooler operation, delivering a stable output through extensive use. The reinforced metal base adds rigidity and enhances vibration control, creating a solid platform for precise tumbling at scale. All of this contributes to a calmer workspace where larger batches can progress without constant supervision.

Smart controls for precision, convenience, and safety

Customize the process with three calibrated speeds and a 9-day timer to align with grit transitions and polishing phases. Automatic shutoff and memory recall keep sessions efficient, while a clear control system helps you stay in tune with each stage of the project.

Large, quiet barrel for flexible, low-disruption use

The 4lb rubber barrel is designed for larger loads and quieter operation. Compared with plastic drums, it can reduce noise and vibration, making multi-day polishing more practical for indoor spaces and shared workshops.

Everything you need, right out of the box

Includes a complete accessory lineup so you can start polishing without searching for parts. In addition to the barrel and motor, you’ll find premium rough gemstones, four polishing grits, jewelry fastenings, spare belts, a screwdriver, a mesh strainer, and a full-color guidebook to help you plan each stage.

Thoughtful gift and dependable support

More than a tool, this kit makes a meaningful gift for Christmas, birthdays, or hands-on learning projects. KomeStone stands behind its products with reliable service and lifetime support, helping you keep the tumbler performing at its best over time.