Stone Tumbler Kit: Polish Your Gemstones! Rock tumbling is a hugely popular hobby for kids and adults alike! This professional-grade tumbler is fun and easy to use, transforming rough rocks into beautifully polished gems with its simple operation and durable design. The kit makes tumbling even easier, turning any raw stone into a super shiny and beautiful gemstone. Timer Function: The durable motor features a timer control setting, so you can set it and forget it. The 7-day digital timer (with auto-shutoff) lets you customize the tumbling process to your needs. Creating your own beautiful gemstones takes time and patience. Size: 21 x 14.5 x 16.6 cm. Have Fun DIY: Kids can collect stones outdoors and transform them into beautiful, attractive gems. Experience the joy of creation, enjoy a sense of accomplishment, and foster curiosity and observation skills. Detailed instructions guide you step-by-step through the tumbling process, including fascinating facts about the gemstones in the set. FUN GIFTS FOR ALL AGES: This isn't just a rock tumbler for kids; it's a great craft tool for adults and families too! The perfect gift for Christmas, birthdays, or any occasion. A stone tumbler can spark children's interest in geography and science while building patience. Easy to Use: The stone tumbling kit is beginner-friendly, and the educational playset includes detailed instructions on the rough stone grinding process. Package Includes: 1 x Stone Tumbler, 1 x Raw Stone (in the roller), 4 types x (coarse grinding, fine grinding, polishing, final polishing) polishing powder, 2 x Ring Rings, 1 x Necklace + Gemstone Holder, 1 x Keychain Chain, 1 x Leather Strap (replacement), 1 x Power Cord with Euro Plug, 1 x English Instructions.