Rock Tumbler 

Rock Tumbler

by Elenco Electronics for Ages 10 to 16
$49.99 MFG Item # 36793
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Turn your rock hunting finds into treasure! Witness the amazing power of gritty water with our heavy, durable plastic Rock Tumbler, a machine that can turn rough stones into beautiful gems. Miracles of the scientific kind do not happen overnight. It's a three-stage process, which will take up to several weeks. 8 oz. gemstone rock pack and 6V adapter provided.
Small parts. Not for children under 3 years.
Toy contains a small ball. Not for children under 3 years.