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Editorial Review
This grit is perfect for use with rock tumblers of any brand! Take your stones from rough rocks to polished gemstones in just 4 easy tumbling step using National Geographic's Grit Refill (Rock tumbler required and sold separately). This product contains 4 stages of grit in easily resealable containers - enough for about 8-10 pounds of rocks.Feel free to contact National Geographic Toys on Amazon if you have any addition questions and we'll be happy to help.

Features
1) HIGH QUALITY silicon carbide grit. This kit comes with enough grit to complete approximately 10-12 lbs of rocks.
2) 4 COURSES of grit take your stones from rough material to polished gems over a 4-step tumbling process
3) COMPATIBLE with all kits. Use this grit for tumbling rocks in any brand of rock tumbler. Lortone, Thumbler, National Geographic, Elenco, Smithsonian and more!
4) POLISH ROCKS of many varieties including quartz, jasper, tiger's eye, and more
5) RECOMMENDED: We recommend approximately 2 tablespoons of grit per pound of rocks.

Specification
Binding : Toy
Brand : National Geographic
EAN : 0816448020636
Label : JMW Sales
Manufacturer : JMW Sales
PackageDimensions_Weight : 3.60 pounds
PackageDimensions : L:11.89 X W:5.39 X H:4.41
ProductGroup : Toy
ProductTypeName : TOYS_AND_GAMES
Publisher : JMW Sales
Studio : JMW Sales
Title : National Geographic Grit Refill for Rock Tumbler - Works with National Geographic, Lortone, Thumler and more