1. CREATE YOUR GEM: A rock tumbler makes any stone and sands everyday rocks into dazzling gems2. EASY TO HANDLE: With simple handling and design, this rock sander tumbler kit makes turning rough rocks into beautifully polished gems fun and easy3. AND LOW NOISE: The grinding machine is made of motor, . Leak proof rubber drums reduce sound and are 75% quieter than other plastic 4. EASY SETUP: Simple instructions and settings make rock tumbling fun and effortless. Control the number of days per roll cycle using a one button timer and automatic off function5. NICE GIFT: Rock tumbler is a great kids, also a great DIY activity for kids to facilitate parent child interactionSpecification:Item Type: Rock Tumbler KitProduct Material: ABSVoltage: 100-240VHow to Use:Take out the product and follow the instructions to use.PackageList:1 x Host1 x Stone Bag(random style color)1 x Power Adapter4 x Polishing Powder Pack1 x Glue1 x Accessories Pack(1 large key 1 small key 1 necklace 2 rings 3 stone buckles 2 pins)1 x User Manual