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View compareFrequently Asked Questions
- Q: What is the material used in the MJR Tumblers Refill Grit Kit? A: The MJR Tumblers Refill Grit Kit is made of premium quality Silicon Carbide and Aluminum Oxide. These materials ensure effective polishing for your rocks and gems.
- Q: What size rock tumblers is this kit compatible with? A: This kit is designed for six-pound rock tumblers. It's specifically tailored to fit tumblers that use Silicon Carbide grit.
- Q: How many different types of grit are included in the kit? A: The kit includes four types of grit: coarse Silicon Carbide, fine Silicon Carbide, pre-polish, and Aluminum Oxide polish. This variety helps achieve the best results.
- Q: How do I use the MJR Tumblers Refill Grit Kit? A: To use the kit, simply pour the grit into your rock tumbler along with the rough stones. Then, let the machine operate to polish your rocks.
- Q: Is this grit safe for all brands of rock tumblers? A: Yes, the grit is compatible with any brand of rock tumbler. This versatility allows users to achieve polished results regardless of the tumbler they own.
- Q: Can I use this kit for gemstones? A: Yes, this kit is ideal for polishing gemstones. Its high-quality grit is designed to bring out the shine in various types of rocks and gems.
- Q: How should I store the refill grit when not in use? A: Store the refill grit in a cool, dry place away from moisture. Keeping it sealed will help maintain its effectiveness and quality.
- Q: Is there a shelf life for the grit in this kit? A: No, there is no specific shelf life for the grit. As long as it is stored properly, it can be used whenever needed.
- Q: How do I clean my rock tumbler after using this grit? A: To clean your tumbler, rinse it thoroughly with water to remove any residue. Ensure it is completely dry before storing or using it again.
- Q: What if I receive a damaged product? A: If you receive a damaged product, contact the seller for assistance. Most manufacturers provide a return policy for such issues.
- Q: Is this grit suitable for beginners? A: Yes, this grit kit is suitable for beginners. It provides all the necessary materials to achieve good polishing results easily.
- Q: Can this kit be used for metal polishing? A: No, this kit is specifically designed for rock and gem polishing. It is not suitable for metal surfaces.
- Q: What makes MJR Tumblers different from other brands? A: MJR Tumblers is a disabled and veteran-owned company known for high-quality tumbling supplies. Their grit is professionally graded for optimal results.
- Q: Does this kit come with instructions for use? A: Yes, the kit typically comes with instructions for usage. It guides you on how to effectively use the grit with your tumbler.
- Q: What type of finish can I expect from using this kit? A: You can expect a superior, high-gloss finish on your rocks and gemstones after using this kit. The combination of grits is designed for optimal polishing results.

