--- product_id: 454336197 title: "Discover with Dr. Cool Replacement Rock Tumbler Barrel for National Geographic Professional Series - 2Lb" brand: "discover with dr. cool" price: "92460CFA" currency: XOF in_stock: true reviews_count: 5 category: "Discover With Dr. Cool" url: https://www.desertcart.sn/products/454336197-discover-with-dr-cool-replacement-rock-tumbler-barrel-for-national store_origin: SN region: Senegal --- # Dedicated polishing barrel avoids grit contamination Compatible with National Geographic & Dr. Cool tumblers 2lb capacity for larger batches Discover with Dr. Cool Replacement Rock Tumbler Barrel for National Geographic Professional Series - 2Lb **Brand:** discover with dr. cool **Price:** 92460CFA **Availability:** ✅ In Stock ## Summary > ✨ Elevate your gem game with the pro polishing barrel ⚙️ ## Quick Answers - **What is this?** Discover with Dr. Cool Replacement Rock Tumbler Barrel for National Geographic Professional Series - 2Lb by discover with dr. cool - **How much does it cost?** 92460CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/454336197-discover-with-dr-cool-replacement-rock-tumbler-barrel-for-national) ## Best For - discover with dr. cool enthusiasts ## Why This Product - Trusted discover with dr. cool brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Polish Like a Pro:** Dedicated barrel ensures flawless final shine without scratches - • **Maximized Capacity:** 2-pound size lets you tumble more stones in one go—boost your productivity - • **No Assembly Needed:** Ready to use out of the box—start polishing immediately - • **Durable Glass Material:** Built to last through countless polishing cycles with consistent performance - • **Seamless Compatibility:** Fits perfectly with National Geographic and Discover with Dr. Cool Professional Tumblers ## Overview The Discover with Dr. Cool Replacement Rock Tumbler Barrel is a 2-pound capacity polishing barrel designed for professional-grade finishing. Compatible with National Geographic and Discover with Dr. Cool tumblers, it ensures a scratch-free, high-gloss polish by dedicating a barrel solely for the final polishing step. Made from durable glass and requiring no assembly, it’s perfect for adult STEM enthusiasts aiming to maximize their rock tumbling efficiency. ## Description Polishing barrel allows you to polish like a pro. We recommend having a dedicated barrel that is only used for the final step in the polishing process to avoid leaving any remnants of rougher grits that might scratch your gemstones and diminish the final polish. Compatible with national geographic professional rock tumbler and discover with dr. Cool professional rock tumbler International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. Review: Works great - I have the grey National Geographic tumbler kit. Came with the small barrel that holds roughly a cup. This one is of the same build and quality. Seems about 3x the size. I don’t think you could go any bigger and still fit on the machine. Review: Works great - Is wider than I thought but great more rocks ## Features - Polishing barrel allows you to polish like a pro. We recommend having a dedicated barrel that is only used for the final step in the polishing process to avoid leaving any remnants of rougher grits that might scratch your gemstones and diminish the final polish. - Compatible with national geographic professional rock tumbler and discover with dr. Cool professional rock tumbler - International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B077JGMBJJ | | Age Range Description | Adult | | Age range (description) | Adult | | Best Sellers Rank | 84,887 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 45 in Tumbling Media | | Brand | Discover with Dr. Cool | | Brand Name | Discover with Dr. Cool | | Customer Reviews | 4.6 out of 5 stars 503 Reviews | | Educational Objective | STEM | | Included Components | Handle, Lid | | Is Assembly Required | No | | Item Dimensions | 14 x 14 x 14 centimetres | | Item Weight | 630 g | | Item dimensions L x W x H | 14 x 14 x 14 centimetres | | Item weight | 630 g | | Manufacturer | JMW Sales, Inc. | | Manufacturer Part Number | PROBARREL | | Material Type | Glass | | Maximum Age Recommendation | 1188.00 | | Model Number | PROBARREL | | Size | 2 pounds | | Sub Brand | Discover with Dr. Cool | | Theme | Birthday, Christmas | | UPC | 816448023392 | | Unit Count | 1.0 count | ## Product Details - **Brand:** Discover with Dr. Cool - **Theme:** Christmas, Birthday - **Recommended uses for product:** Home - **Shape:** Round - **Pattern:** Geometric ## Images ![Discover with Dr. Cool Replacement Rock Tumbler Barrel for National Geographic Professional Series - 2Lb - Image 1](https://m.media-amazon.com/images/I/51Uj4itNpGL.jpg) ![Discover with Dr. Cool Replacement Rock Tumbler Barrel for National Geographic Professional Series - 2Lb - Image 2](https://m.media-amazon.com/images/I/618OsVazlmL.jpg) ![Discover with Dr. Cool Replacement Rock Tumbler Barrel for National Geographic Professional Series - 2Lb - Image 3](https://m.media-amazon.com/images/I/815-aYvi8bL.jpg) ![Discover with Dr. Cool Replacement Rock Tumbler Barrel for National Geographic Professional Series - 2Lb - Image 4](https://m.media-amazon.com/images/I/812hULuYAfL.jpg) ![Discover with Dr. Cool Replacement Rock Tumbler Barrel for National Geographic Professional Series - 2Lb - Image 5](https://m.media-amazon.com/images/I/71FjWayKs4L.jpg) ## Questions & Answers **Q: Is the metal on this barrel stainless steel?** A: I've been running this barrel for 5 weeks now and seems to be running good. Metal appears to be stainless steel to me since it seems to be heavier than what aluminum would be. **Q: How to assemble Barrel** A: It is assembled. Tub and lid. May have to screw on knob to lid. **Q: where is this made?** A: Our tumbler barrels are manufactured in China. **Q: I am looking for a 3 lb barrel for a national geographic rock tumbler. Fo you have any idea where to find one.** A: Please contact help@thinkbluemarble.com for parts under warranty. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great *by J***S on 25 February 2025* I have the grey National Geographic tumbler kit. Came with the small barrel that holds roughly a cup. This one is of the same build and quality. Seems about 3x the size. I don’t think you could go any bigger and still fit on the machine. ### ⭐⭐⭐⭐⭐ Works great *by A***R on 23 January 2023* Is wider than I thought but great more rocks ### ⭐⭐⭐⭐⭐ It does tumble *by B***S on 17 May 2025* Good for small batches ## Frequently Bought Together - Discover with Dr. Cool Replacement Rock Tumbler Barrel for National Geographic Professional Series Tumbler and Hobby Series Tumblers, 2 Pound Rock Polisher Barrel with Leak-Proof Lid - Blue Marble 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 - National Geographic Rock Tumbler Kit - 3 Lb. Extra Large Capacity Barrel with 3-Speed Motor & 9-Day Timer, Kit Includes Rocks for Tumbling and Rock Polisher Grit, Rock Tumbler for Adults and Kids --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/454336197-discover-with-dr-cool-replacement-rock-tumbler-barrel-for-national](https://www.desertcart.sn/products/454336197-discover-with-dr-cool-replacement-rock-tumbler-barrel-for-national) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-07-13*