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3D DIY Rocker Tumbler Supplier Kids Hobby Edition Gem Grinder Competitive Prices STEM kit

STEM Learning & Education Toys Rocker Tumbler Supplier

Type: DIY Gem Grinder, 3D polished gems
Item Weight: 3.5 pounds
Accessories: Grinding machine, gemstone, chain, grinding powder, manual, wire
Product Dimensions: 10.43 x 8.46 x 6.54 inches

Masterful OEM & ODM
Whether you prefer our designs or to make your own, we value your design and preferences and will utilize our expertise to meet your requirements.


DIY Rocker Tumbler Gem Grinder STEM kit

Union Vision are China leading manufacturer of  toys  for kids. As a Rocker Tumbler Supplier, we support OEM and ODM orders for wholesale kids toys. We provide better and better service for customer, including production design, customization, quality control, logistics, etc. We have competitive prices and best-selling kids toys.


Turn rough rocks into polished gems: Discover and learn fun rock tumbling with Advanced Rock Tumbler. Pour in the rough stones and grit and let the machine do its job!

Complete Kit

Includes: Roller, Low Noise Bucket (1 lb capacity), 4 grit bags, 1/2 lb of various rough stones, strainer, jewelry fasteners and an easy-to-use illustrated instructional guide and study guide manual.
POWERFUL QUALITY: Runs with a powerful heavy-duty motor that lasts a long time and includes a leak-proof barrel that runs quieter than other brands.

Advanced functions

Rocker Tumbler Supplier including speed control (providing more refined rolling results), 1 day / 2 days / 4 days timing through the button, after pressing the button, the time is controlled, and the button needs to be stopped to press the button again.
Fun and Educational Gifts for All Ages: Science projects aren’t usually fun and engaging, but this kit does both! It captivates kids and adults alike right out of the box and is the perfect STEM project for kids 8+. It fosters a love of science, geology and mineralogy in a fun and exciting way.


As a Rocker Tumbler Supplier, we must promise the safty of toys. This product is suitable for children over 8 years old. Please pay attention to the age requirements to prevent the product accessories from being swallowed by children. CREATE YOUR OWN GEM – Make any stone sparkle and polish everyday rocks into dazzling gems! Thanks to its simple operation and durable design, this rock tumbler kit makes it fun and easy to turn rough rocks into beautifully polished gems.


Durable Tumblers – Our high-quality tumblers are built with durable motors to last a lifetime. The leak-proof rubber barrel reduces sound, making it 75% quieter than other plastic models. Great STEM activity for kids.
The Complete HOBBY Flip Kit is a great gift for girls and boys!
EASY TO USE – Simple instructions and one-touch setup make rock tumbling fun and easy. Control the number of days per rollover cycle with a one-touch timer and auto-off, set it and forget it! This is a great gift for kids.

China Rocker Tumbler Supplier

DIY Rocker Tumbler polished Gems, Rocker Tumbler Supplier
Custom Product Design
Muiltifunction can be chosen
Strict selection of environmentally friendly materials
Can receive retail and wholesale


Q1: what’s the delivery time?

If it is the factory version of the packaging, we will ship the product within 30 days, if it is a revised design, we need 60 days to make the product.

Q2: Can you help make our own design?

We are experienced in OEM and ODM service for many world famous brands and retailers for years. Send us your idea, our professional design team will support your vision and make it a reality.

Get In Touch With Best
Toy Manufacturer in China

Minimum Order Amount: $2000

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