Discover with Dr. Cool Hobby Rock Tumbler – Easily Transform Rocks into Gemstones
Brand: Discover with Dr. Cool


COMPLETE ROCK TUMBLING KIT – Includes tumbler and barrel, half pound of gemstones (9 different types), polishing grit (4 grades), jewelry fastenings, learning guide, and instructions
DURABLE QUALITY – Backed by our 2-year warranty, this metal base and high-powered motor give you a workhorse machine that will last for years
NOISE-REDUCING BARREL – Features a noise-reducing rubber barrel with stainless steel lid that is both leak-proof and much quieter than plastic barrels
SET IT AND FORGET IT – This easy-to-use tumbler has a programmable timer, giving you bigger results with less energy while never over-tumbling your rocks
100% SATISFACTION GUARANTEE – Includes 2-year warranty. Join the millions of parents who have chosen our award-winning science toys