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Model 65-T Rock Tumbler Complete with Barrel - The Rock Shed
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Smithsonian® Rock Tumbler Stone Polisher - Young Explorers Creative Educational Products
The Original Rock Tumbler for Kids | Home Science Tools
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Explore One Rock Tumbler Set — Explore Scientific
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Lortone 33B Double-Barrel Rock Tumbler | Dual Drum Rotary Rock Tumbler
ADVANCED ROCK TUMBLER KIT — Dan&Darci
Rock Tumbler Kit for Kids | ThinAirBrands
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Single Barrel Rock Tumbler with Grit Kit – MJR TUMBLERS