National Geographic Rock Tumbler Grit and Polish Refill Kit - Tumbling Grit Media, Polish Up to 20 lbs. of Rocks, Works with Any Rock Polisher, Rock Tumbler Supplies
EASY TO USE FOUR-STAGE ROCK GRIT - The first rock tumbling grit stage provides initial shaping, the second smooths rock surfaces, the third pre-polishes rocks, and the fourth provides the final polish
HIGH QUALITY - This rock polisher grit refill pack comes with enough high-quality silicon carbide grit to put a dazzling polish on up to 20 lbs. of rocks, gems, glass, and more
COMPATIBLE WITH ALL TUMBLERS - This complete 4-step rock tumbler grit refill kit works with all rock tumblers. For best results, use with National Geographic Rock Tumblers and rock tumbling supplies.
EASY TO MEASURE AND STORE - Designed for ages 14 and up, each rock tumbling grit stage is packaged in a wide-mouth container with secure, screw-top closure.
HIGH-QUALITY EDUCATIONAL PRODUCTS - We're proud to make the highest quality hands-on science products, and all are backed by exceptional service. If your experience is less than stellar, let us know and we'll make things right!
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