Learning And Exploring Through Rock Tumbler Rock Tumbler for Kids / Rock Tumbler for Adults Make rock collecting more fun and educational while boosting imagination and hands-on skills. 2×3LB Large Leak-proof Rubber Barrel With 2×3LB extra large barrel, that means you can polish more rocks at once than 1 lb or 2.5 lbs drum. To prevent the liquid from leaking during polishing, our rock tumbler is designed with double stainless steel top cover. Discover the beauty of polished stones ! Explanation: The motion in the barrel of the polisher simulates the natural action of flowing water or ocean waves. Beaches and riverbeds contain rocks and pebbles smoothed by water and the abrasive sand it carries. As rocks grind upon one another with constant water or sand in the mix, they begin to round and smooth. Although this is a constant process, it does not however, naturally polish the rocks. The complete process usually takes 4-6 weeks. Specifications Barrel Capacity: 2×3LBEasy-to-follow rock tumbling instructionsNoise reducing leak-proof barrel with aluminum lidSimple instructions and settings make rock tumbling fun and easy100% natural ground walnut shells provides excellent heat conductingTiming belts has greater flexibility and abrasion resistance than normal belt Leegol Electric 3LB Rock Stone Tumbler Leegol Electric Dual Barrel Rock 6LB Tumbler Leegol Electric 6LB Rock Polisher Tumbler Leegol Electric 5LB Vibratory Tumbler Leegol Electric 18LB Vibratory Tumbler Add to Cart Add to Cart Add to Cart Buying Options Add to Cart Customer Reviews 3.8 out of 5 stars 4,926 3.8 out of 5 stars 4,926 3.6 out of 5 stars 89 3.5 out of 5 stars 206 3.7 out of 5 stars 180 Price $67.99$67.99 $98.99$98.99 $96.99$96.99 — no data $258.99$258.99 Belt Synchronous Belt Synchronous Belt 5 Pieces of V-belt / / Barrel Capacity 3LB 2 x 3LB 2 x 3LB 5LB 18LB Recommended Age 12+ 12+ 12+ 12+ 12+ Suitable for Rock, Brass, Gold, Silver, Coins or Copper Rock, Brass, Gold, Silver, Coins or Copper Rock, Brass, Gold, Silver, Coins or Copper Metal Parts, Brass, Gold, Silver, Coins or Copper Metal Parts, Brass, Gold, Silver, Coins or Copper