Description: FeatureThis Rock Tumbler Kit allows you to turn rough stones into fine gem, fun and easy. Make any stone shiny, polish everyday stones into dazzling gems, easy to handle and designed to be durable. Rock Tumbler For KidsRock Polisher Kit is beautiful handicrafts for children. While operating, children can experience joy of labor and enjoy successful achievements, which can develop their curiosity and observation. High QualityRock tumbler is made with high-quality electric motor, which can be used continuously and can work continuously for a long time, which also is quieter than others. Perfect GiftOur Gem Grinder is a fun and educational gem-loving toy for all ages, kids and adults alike. This is definitely the perfect gift for Christmas, Children's Day. Package IncludesYou can get a complete rock tumbler kit that includes all the tools you need to polish a stone: rock tumbler, a pound of gemstones (9 different types), four polishing grits, a jewelry fix, and a detailed Study Guide. Size Chart: 2114.516.6cm/8.27*5.71*6.54inch Package Includes: 1setRock Tumbler Kit Note: 1.This is not infant toy, please take away from children to avoid eating. 2.Please allow slightly errors due to manual measurement and different monitors.