Rock tumbler kit for kids and adults, professional rock polisher with electronic motor Parts List:1 x Rock Tumbler1 x Roller1 x Stone Bag (optional style and color) (inside the drum)1 x Power Adapter4 x Sanding Powder1 x Glue1 x Wheel Belt1 x Accessory Bag (1 large key ring, 1 small key ring, 1 necklace, 2 rings, 3 stone clasps, 2 pins)1 x User ManualHighlight [Grinding your Own Gems] Rolling stones are a very popular hobby for children and adults This professional rock tumbler makes tumbling easier in a fun way, turning rough rocks into beautifully polished gems.[Easy to Use] You can set any grindstone time from 1-7 days with a button, or you can stop and continue working with one button.<br> After finishing the set working time, the stone grinder stops automatically.<br> The leak-proof rubber bucket reduces sound and the overall noise is 75% lower than the plastic tumbler bucket.[Educational and Science Toys] Kids can collect all kinds of stones outdoors and grind them into attractive diamonds by machine.<br> In the process of grinding, they can cultivate their curiosity and observation, and children can also experience the fun of labor.[Durable Polishing Machine] Our polishing machine adopts high-quality motor, which is durable and can work continuously for a long time.<br> Suitable for kids DIY Activities.[Perfect Gift] This is a science education kit for all genders and ages that develops a love of science, geology and mineralogy in a fun and exciting way.<br> Perfect for birthday, Christmas and other holiday gifts.Detailed Name: Rock Tumbler Kit Product Material: ABS, metalProduct Size: 211<br> 4.51<br> 6.6cmApplicable Age: 8+Voltage: 100-240VColour: blackNotes:<br> 1.Due to the difference between light and screen settings, the color of the item may differ slightly from the pictures.<br> 2.Please allow for slight measurement deviations due to manual measurements.[Grinding your Own Gems] Rolling stones are a very popular hobby for children and adults This professional rock tumbler makes tumbling easier in a fun way, turning rough rocks into beautifully polished gems.[Easy to Use] You can set any grindstone time from 1-7 days with a button, or you can stop and continue working with one button.<br> After finishing the set working time, the stone grinder stops automatically.<br> The leak-proof rubber bucket reduces sound and the overall noise is 75% lower than the plastic tumbler bucket.[Educational and Science Toys] Kids can collect all kinds of stones outdoors and grind them into attractive diamonds by machine.<br> In the process of grinding, they can cultivate their curiosity and observation, and children can also experience the fun of labor.[Durable Polishing Machine] Our polishing machine adopts high-quality motor, which is durable and can work continuously for a long time.<br> Suitable for kids DIY Activities.[Perfect Gift] This is a science education kit for all genders and ages that develops a love of science, geology and mineralogy in a fun and exciting way.<br> Perfect for birthday, Christmas and other holiday gifts. Our products are made with the splendid quality materials and are designed to provide you with the best possible user experience.