NATIONAL GEOGRAPHIC Rock Tumbler Grit and Polish Refill Kit - Tumbling Grit Media, Polish Up to 20 lbs. of Rocks, Works with any Rock Polisher & Tumbler Supplies
- 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.
- EXCLUSIVE - Blue Marble has developed this product exclusively for .
- AWARD-WINNING PRODUCTS - Blue Marble, winner of the Toy Association's prestigious Toy of the Year Award, proudly develops products that foster education, imagination, and creativity, with a U.S. support team to ensure a stellar experience!
| Included Components | 4 Stages of Rock Polishing Grit, 10 mL Grit Scoop, Rock Tumbling Instructions |
| Manufacturer | JMW Sales, Inc. |
| Unit Count | 1 Count |
| Brand | Blue Marble |
| Number of Players | 1 |
| UPC | 816448020636 |
| Operation Mode | Manual |
| Theme | Rock Tumbling |
| Colour | Black |
| Size | One Size |
| Educational Objective | STEM |
| Global Trade Identification Number | 00816448020636 |
| Item Weight | 1.78 kg |
| Manufacturer recommended age | 14 Years And Up |
| Number of Packs | 4 |
| Set Name | Rock Tumbler Grit Refill Kit |
| Manufacturer Part Number | NGBULKGRIT |
| Material Type | Silicone |
| Age Range Description | 14 Years And Up |
| Model Number | NGBULKGRIT |
| Item Type Name | Rock Polishing Grit Media |
| Manufacturer Warranty Description | We're proud to make the highest quality products which are backed by exceptional service. |
| Indoor Outdoor Usage | Indoor |
| Item Dimensions | 5.5 x 5.5 x 4.25 inches |
| Product Type | Rock Polishing Grit Media |
| Sub Brand | National Geographic |
| Supported Battery Types | No batteries required |
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Category |
Abrasive & Finishing Products , Finishing Products , Tumbling Media |
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National Geographic Bulk Polishing Grit for Rock Tumblers
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 & more! The first stage provides initial shaping, the second smooths rock surfaces, the third pre-polishes rocks & fourth provides the final polish.
The National Geographic Rock Tumbling Grit Bulk Pack contains over 3 pounds of rock polishing grit, compatible with any tumbler!
This Kit Includes:
4 Stages of Rock Polishing Grit
1 10 mL Grit Scoop
Rock Tumbling Instructions
This four-stage silicon carbide grit for rock tumbling systems 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 20 pounds of rocks!
This rock tumbling grit refill pack is compatible with any tumbler on the market, but for best results, use with National Geographic tumblers and rock tumbling supplies, including ceramic media and GemFoam.
We make the highest quality hands-on science products, and all are backed by exceptional service. With a mission to inspire people to care about the planet, the National Geographic Society is one of the world’s largest nonprofit scientific and educational organizations.
Product details
Shipping & Delivery
At GofinchKart Australia, we aim to deliver your order quickly and safely.
Domestic Shipping (Australia):
Orders are typically delivered within 3–7 business days.
International Shipping:
Estimated delivery time is 12–26 business days, depending on the destination and customs processing.
Once your order has been dispatched, you will receive a tracking number. Delivery times may vary during public holidays or due to unforeseen delays.