1. Rock Tumbler Kit: Polish Your Gemstones: Rock tumbling is an extremely popular hobby for both kids and adults! This professional rock tumbler is fun and easy to use, transforming rough rocks into beautifully polished gemstones thanks to its simple operation and durable design. The tumbler kit makes tumbling even easier, offering an interesting way to transform any raw stone and polish it into super shiny and beautiful gems. Timer Function: The durable motor features a timer control setting, so you can set it and forget it. The 7-day digital timer (with automatic shut-off function) allows you to set and repeat as needed. Creating your own beautiful gemstones takes time and patience. Size: 21 x 14.5 x 16.6 cm. 2. Have Fun DIY: Children can collect various stones outdoors and transform them into beautiful and attractive gems. During the process, children can experience the joy of working, enjoy the feeling of success, and foster their curiosity and observation skills. Detailed instructions guide you step-by-step through the tumbling process, including fascinating facts about the gemstones in the set. 3. FUN GIFTS FOR ALL AGES: Rock tumbling isn't just for kids; it's also a great hobby for adults, making it a fun and high-quality craft tool for children and families. It's the perfect gift for Christmas or Children's Day. A rock tumbler can enhance children's interest in geography and science and train their patience. Easy to Use: The rock tumbling kit is easy to use and very suitable for beginners. The instruction manual in the educational playset provides detailed instructions on the rough stone grinding process. Package: 1 x rock 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. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!