Tryes Rock Tumbler Kit Adults - Rock Polisher Tumbler with Noise Reduction Cover, Speed&Timer Control, Includes 4 Polishing Grits, Rough Gemstones, Learning Guide etc., Great Science Gift for All Ages

♦ Dual Noise-cancelling Functions - Tryes professional rock tumbler has a biggest advantage: Noise Reduction! The rock polisher tumbler with cover is 40.6% quieter than others', and the tire rubber is 75% quieter than plastic barrels.
♦ Durable Rock Tumbler - The upgraded leak-proof barrel is lined with rubber designed for staying sturdy and quiet. This is a high-quality rock tumbler that lasts for many years.
♦ Rock Tumbler Kit - The rock tumbler set comes with everything you need, including, 1 Rock Tumbler, 2 Bags of Rough Gemstones, 4 Polishing Grits, 2 Polishing Sponge Blocks, 1 Filter, 1 set Jewelry Setting (placed in the barrel) 1 Power Adapter and a detailed learning guide. A Perfect gift for adults and Kids!
♦ Easy to Use & Educational - Digital 2-Speed setting & 7-day timer, There are 3 processes in Setting for grinding stones (according to instructions). The rock tumbler with a color printing instructions leads you operate the tumbler machine step-by-step, and telling you the fascinating story of the gemstones, which is a good material to read it for your kids.
♦ Make Your Own Gemstones - Enjoying the tumbling process! There is an entire process that rough rocks go through in order to become the shiny stones. It is the time you have wasted for your stone that makes your stone so important!