VEVOR 3LB Rock Tumbler Kit, Direct Drive Professional Rock Tumbler, 4-Speed/9-Day-Timer, Rock Polisher with Rough Gemstones/Grits/Jewelry Fastenings, Stone Polishing Kit for Adults Kids, STEM Gift

VEVOR 3LB Rock Tumbler Kit, Direct Drive Professional Rock Tumbler, 4-Speed/9-Day-Timer, Rock Polisher with Rough Gemstones/Grits/Jewelry Fastenings, Stone Polishing Kit for Adults Kids, STEM GiftPatented Low Noise GrindingSmart PolishingEasy to Use10 Rare GemstonesConsiderate Design4-Speed Gears 9-Day TimerTumbler Base Material: ABS,Speed: 1-4 Gear,Gross Weight: 8.5 lb / 3.83 kg,Timer: 1-9 Day,Barrel Capacity: 3 lb / 1.36 kg Max,Voltage: 12VDC,Item Model Number: KD-C3011,Rated Power: 16W,Net Weight: 6.8 lb / 3.1 kg,Product Size: 8.7 x 6.7 x 9.6 in / 22 x 17 x 24.5 cm,Barrel Size: Φ6 x 6.4 in / 15 x 16.2 cm