Product DescriptionThe National Geographic Rock Tumbler Grit Bulk Pack contains over 3 pounds of rock polishing grit, compatible with any rock tumbler!This Kit Includes:- 4 Stages of Rock Polishing Grit- 1 10 mL Grit Scoop- Rock Tumbling InstructionsThis four-stage silicon carbide grit for rock tumbling system is the ideal way to give rough rocks a smooth, polished look. The first rock polishing stage smooths rough edges and provides initial shaping. The second stage smooths the rock surfaces even more. The third stage provides a strong pre-polish, followed by the fourth stage which completes the grit polishing process.The 10 mL scoop in the grit refill kit ensures accurate grit measurements for every stage, allowing you maximize your grit usage for up to 10 pounds of rocks!This grit refill for rock tumbler pack is compatible with any rock tumbler on the market. But for best results, use this rock tumbler grit and polish refill with National Geographic rock tumblers and rock tumbling supplies, including ceramic media and GemFoam.National Geographic Toys makes the highest quality hands-on science toys, and all products are backed by exceptional service.About the National Geographic Society: With a mission to inspire people to care about the planet, the National Geographic Society is one of the worlds largest nonprofit scientific and educational organizations.From the ManufacturerThis 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 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 if you have any addition questions and we'll be happy to help.

Features

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

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

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 - Each rock tumbling grit stage is packaged in a wide-mouth container with secure, screw-top closure.

HIGH-QUALITY EDUCATIONAL TOYS - We're proud to make the highest quality hands-on science toys, and all our products are backed by exceptional service. If your experience is less than stellar, let us know and we'll make things right!

Specification

Product Detail
Color	Black
Size	Medium
Dimensions	5.5x5.5x4.25
Weight	3.92