Electric Rock Tumbler Kit with Digital Timer and Detachable Barrel

This rock tumbler kit contains everything needed to process rough stones through four tumbling stages. Included are rough gemstones, coarse grit, medium grit, pre‑polish, fine polishing powder, replacement belts, and a bag of jewelry findings. No extra purchases are required to complete a batch.

7‑Day Digital Timer
A digital timer can be set from hours up to seven days. The tumbler runs for the programmed duration and then stops automatically, completing the selected grinding or polishing stage without manual shut‑off.

Quiet, Leak‑Proof Barrel
The rubber barrel reduces operating noise by approximately 75% and features a sealed lid that prevents leaks. It can be removed from the roller base for filling, emptying, or switching grit between stages. The barrel stays secure during tumbling cycles that last for days.

Materials and Dimensions

Housing material: ABS

Product dimensions: 21 × 14.5 × 16.6 cm

Product weight: 1586 g

Packaging: Color box with English instructions

Where It's Used
Suitable for geology hobbyists, classroom STEM projects, jewelry makers, and crafters of all experience levels. The tumbler transforms raw stones into smooth, glossy gems that can be used for wire wrapping, keychains, decorative displays, or simply observing the natural patterns revealed after polishing.

Package Includes

Electric tumbler base

Rubber barrel with lid

Rough gemstones

Four stages of grit and polish

Replacement drive belts

Jewelry findings

English instruction manual

Note
Product dimensions are measured manually and may vary by 1–3 cm. The actual product color may differ slightly from images due to display and lighting conditions. The received item serves as the final reference.