Rock Tumbler Kit, 4 Speeds, 1–9 Day Timer, 3 lb Barrel

Rock tumbler kit for quiet, consistent stone polishing—turn rough gemstones into smooth, shiny keepsakes with less mess and less maintenance. The belt-free direct-drive motor runs at ≤35 dB for low-noise use, while 4 speed settings and a 1–9 day timer help match each tumbling stage. A 3 lb heavy-load barrel increases batch size for faster results at home, in classrooms, or for family crafting.

• Delivers low-noise tumbling at ≤35 dB with a belt-free direct-drive motor for smoother operation and reduced upkeep.


• Adjusts speed from 75–120 RPM across 4 settings to match shaping, smoothing, and finishing stages.


• Sets cycles with a 1–9 day polishing timer for controlled results without constant monitoring.


• Protects runs with overload protection and power-off memory that resumes the remaining cycle after outages.


• Includes rough gemstones, polishing grits/powder, sieve, shaker balls, and jewelry cords/bases for gifting and displays.

Start with included assorted rough stones, follow the step-by-step manual, and refine each batch from coarse grind to final polish. The large 3 lb barrel helps you process more rocks at once, reducing refills and keeping results uniform. Designed for beginners and experienced hobbyists alike, this stone polishing kit supports creative projects, science learning, and DIY jewelry making. Grab yours today and begin transforming raw stones into polished pieces worth keeping.

• Operation noise: ≤35 dB


• Drive type: belt-free direct-drive motor (low-voltage)


• Speed settings: 4 levels, 75–120 RPM


• Timer: 1–9 days


• Barrel capacity: 3 lb heavy-load barrel


• Dimensions (without barrel): 8.66 x 7.09 x 4.8 in (220 x 180 x 122 mm)


• Dimensions (with barrel): 8.66 x 7.09 x 9.84 in (220 x 180 x 250 mm)


• Net weight: 7.17 lb (3.25 kg)