RTumbler Professional Grade Rock Polishing Grit Rock Tumbler Grit for 15 pound Tumbler

The National Geographic Hobby Rock Tumbler Kit is a complete rock polishing kit that allows your kid to turn rough rocks into gemstones. Tumbler kit by National Geographic includes one pound of rough gemstones, eight packets of polishing grit, a storage pouch, and five jewelry fastenings. The tumbler base and motor are built to last and the tumbler barrel is designed to be low noise and leak proof. It has a built in timer and automatic shut off switch too.

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4 step grit set with instructions for use in a 15 pound tumbler, or 5 3lb tumbles 1 pound 60/90 Coarse Silicon Carbide Grit 1 pound 120/220 Medium

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What is the cheapest way to buy or make grit to polish rocks in a rock tumbler? - Quora

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Rock Tumbling Grit Polish for 15 Lbs Tumblers With Plastic Pellets