Koolstone  C1 Pro Brushless Rock Tumbler Kit - Professional Large 2.5LB Capacity, Up to 3X More Durable, Ultra Long Working Life Rotary Polisher with Full Accessories & Memory Function, Ideal for Adults Kids
 
EXCLUSIVE CUTTING-EDGE BRUSHLESS MOTOR -- With a robust brushless motor, this rock tumbler delivers lightning-fast and highly-effective tumbling action that leaves your gems and rocks polished to perfection. In addition, what makes us proud is that we are currently the FIRST and ONLY brushless motor rock tumbler available on the market. 
2.5LB LARGE CAPACITY & 75% QUIETER -- An updated features is that C1 Pro Rock Tumbler has a large 2.5LB capacity. Which allows to tumbler more rocks each time. Another improvement is the quieter barrel. Rubber material which has 75% quieter than most plastic barrel. 
FASTER POLISHING TIME & BETTER POLISHING RESULTS -- 3-speed controls (providing more granular tumbling results), a 9-day timer (with automatic shutoff feature and memory function), all displayed on clear screen, letting you easily hone your settings for precise tumbling each time. 
EVERYTHING YOU NEED FOR TUMBLING IS HERE -- C1 Pro Rock Tumbler has everything you need to create polished gemstones. Rock tumbler, 2.5LB capacity rubber barrel, 1LB for 9 different types of rough gemstones, 2 belts and 4 polishing grits and ceramic contact media, sifter, jewelry fastenings, and illustrated tutorial guide. Just tumbling right away!