Function: 1. CREATE YOUR JEWELS: Make every stone shine and polish your daily rocks into dazzling gems, with its simple operation and durable design, this rock grinding kit allows you to transform rough rocks into beautifully polished gems, fun and easy 2. The leak-proof rubber body reduces sound, making it 75% quieter than other plastic models. Great DIY activities for kids 3. COMPLETE TUMBLER SET: Includes everything you need to polish your gems, such as 4 polishing grits, real rough gems, and a detailed guide to full-color research. Great prezent for girls and boys 4. EASY TO USE: Simple instructions and one-touch settings make grinding gems easy and fun. Control the number of days in the scroll cycle with one-touch timer and automatic shutdown, set and forget 5. STABLE AND DURABLE: The ma rock drum set stable structure, excellent performance and long service life Specification: Item Type: Rock Tumbler Kit Model: HS-403 Material: ABS, metal Voltage: 100-240 V List of packages: 1 x Host 1 x Roll 1 x stone bag (random style and color) (inside roll) 1 x Power Supply 4 x Abrasive Grains 1 x Glue 1 x koło strap 1 x akcesoria bag (1 large key chain, 1 small key chain, 1 necklace, 2 ring rings, 3 stone buckles, 2 pins) 1 x User Manual