HLGKBY Professional Rock Tumbler Machine Kit, DIY Stone Polishing Toy Grinding Machine, Detachable DIY Stone Polisher with Button 7 Day Polishing Timer, Electric Gem Grinder for All Ages

Rock Roller Kit:Make any stone shine, polish everyday stones into dazzling gems, easy to operate and durable in design, this electric gem grinder lets you turn rough stones into beautifully polished gems, fun and easy Easy to Use:7-day digital timer, you can set and repeat according to your needs, and you want to have your own beautiful gemstones, which need a long time of grinding and polishing, so it takes time, patience also takes time Stable and Durable:The tumbler group has stable structure, excellent performance and long service life, With rock tumbler, you can easily process rough gems into polished gems Quiet:Premium grinders feature durable motors that are built to last. Leak-proof rubber barrel reduces noise and is 75% quieter than other plastic models. Make beautiful crafts for kids Fun for Parent-child Interaction:Strengthen your bond with your child through this engaging and educational rock grinder toy that's fun for all ages. Great birthday or Christmas gift for kids and adults