Features: Experience the pleasure of parent child bonding with this craft electric rock tumblers for kids, enabling children to safely transform rough stones into polished gemstones using a child friendly design. Crafted from plastic with a powerful electric roller systems, it ensures efficient polishing, durability, and safety without piercing edges for worry release use. Perfect for children aged 6 12 who enjoy hands on projects, fostering creativity, motor skills, and a passion for science through interactive play. Ideal for family craft projects, school science experiments, or outdoor adventures, this versatile rock polishing machine sparks imagination in diverse settings. Product includes grinding machine host 1pc, rotating bucket 1pc, USB power cord 1pc, stone bag 1pc(including 9 stones), 150 meshes coarse powder 50g 1pc, 600 meshes coarse powder 50g 1pc, 100g white crystal bag 1pc, necklace string 1pc, 8mm needle release pearl sheep's eye x 6, rings holder 1pc, ear clip x 2, bracelets string 1pc, velvety bag x 2, alcohols glues 1pc, 50ml measuring cup 1pc, instruction manual 1pc. Specifications: Materials: Plastic Size:Approx.21.5x20.5x15cm/8.46x8.07x5.90inches Package Includes: 1Set Craft Children Electric Roller Grinding Stone Polishing Machine note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!