Features: Create your gems: With rock tumbler, you can easily process rough gems into polished gems. Using a soft rubber bucket can absorb the impact of rolling rock, making it 75% quieter than other plastic buckets. Stable structure, excellent performances, and long service life. Easy to use: Simple instructions and one clicks settings make grinding gemstones easy and enjoyable. Use one clicks timer and automatic shut down to control the number of days for each flipping cycle. Once set, you can forget. Due to its simple operation and durable design, this stone grinder kit can transform rough stones into beautifully polished gemstones, which is both fun and simple. Rock tumbler transforms rough raws stones into smooth gemstones, and you will be very excited to see the changes of rock with each cycle. Interesting puzzle toy are great gifts for girls, boys, and children. Specifications: Material: ABS Size: As shown in the picture Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Rock Tumbler