🪨 Polish your passion, rock your world!
The NATIONAL GEOGRAPHIC Rock Tumbler Grit and Polish Refill Kit offers a complete 4-stage silicon carbide grit system designed to polish up to 20 lbs. of rocks, gems, and glass. Compatible with all rock tumblers, it features easy-to-use, securely packaged grit containers and is developed by Blue Marble, an award-winning STEM-focused brand. Ideal for hobbyists and educators alike, this kit delivers professional-quality results with simple, foolproof instructions.
| ASIN | B01MRKI4W0 |
| Age Range Description | 14 years and up |
| Best Sellers Rank | #1,233 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Tumbling Media |
| Brand Name | Blue Marble |
| Color | Black |
| Customer Reviews | 4.6 out of 5 stars 18,430 Reviews |
| Educational Objective | STEM |
| Global Trade Identification Number | 00816448020636 |
| Included Components | 4 Stages of Rock Polishing Grit, 10 mL Grit Scoop, Rock Tumbling Instructions |
| Item Dimensions | 5.5 x 5.5 x 4.25 inches |
| Item Height | 4.25 inches |
| Item Type Name | Rock Polishing Grit Media |
| Item Weight | 1.78 Kilograms |
| Manufacturer | JMW Sales, Inc. |
| Manufacturer Maximum Age (MONTHS) | 1188 |
| Manufacturer Minimum Age (MONTHS) | 168 |
| Manufacturer Warranty Description | We're proud to make the highest quality products which are backed by exceptional service. |
| Material Type | Silicone |
| Number of Players | 1 |
| Operation Mode | Manual |
| Size | One Size |
| Sub Brand | NATIONAL GEOGRAPHIC |
| Supported Battery Types | No batteries required |
| Theme | Rock Tumbling |
| UPC | 816448020636 |
| Unit Count | 1.0 Count |
J**E
Good quality.
My first experience with a rock tumbler and I love it. Works just as explained in the directions.
B**T
My first run outcome
Im a kid again with this stuff! Easy to use, idiot proof instructions! Great outcomes.
G**S
excelente
excelente producto
M**N
Okay, but they still don’t shine with a wet look.
We bought these looking for another way to try to get our rocks to shine with a wet look. They make our rocks a little more smooth, but we still can’t figure out how to get the wet look on them. They are reusable, but you need to make sure you keep track of what you used them with or after because you don’t want to add grit to them. I would say they worked okay. The price was decent.
L**K
Great polishing
This make rock tumbling so much easier. Each bottle it number. So you know what one to use.
J**N
Ceramics lapidary
Works great
B**M
They work
I have only done one round in my tumbler, and one for a few days. But there was some shiny rocks already. They work great, I wish there were a few more cubes so I could do bigger patches but, theyre awesome
K**A
Perfect for my Rock Tumbler!
This is a great item. It arrived fast and is exactly what I needed. My glass is in the rock tumbler now and getting smoother by the hour! This will be by go to product when I need more!
Trustpilot
2 weeks ago
1 week ago
