Hobby Rock Tumbler
With the Hobby Rock Tumbler from Discover with Dr. Cool, making beautiful gemstones is easy! Just add the polishing grit, water, and unpolished stones into the tumbling machine and set the timer. The machine will polish your stones into beautiful, shining gems! There is no better way for boys and girls to learn about geology. This science kit will provide hours of fascinating science fun and comes with everything you need to start exploring the exciting hobby of rock tumbling.
Turn rough rocks into polished gems. Our powerful tumbling machine features a strong motor, and includes a leak-proof rubber barrel, a timer, 9 different gemstones and 4 types of grit. Amazing! For ages 8 yrs-teen, from Discover with Dr Cool.
Vendor: Blue Marble/Dr. Cool