Comprehensive stone polishing set that includes all essential items for starting a project: 2 straps, rough stones, 4 grinding media, fine polish and final polish. Ideal for enthusiasts who want to start their stone polishing journey. Durable construction with a heavy-duty roller assembly for reliable performance, helping rough gems transform into polished stones with ease. Quiet and efficient operation: the tumbler uses high-quality grinders and a leak-proof rubber barrel. This unit is about 75 percent quieter than plastic models and provides a smooth polishing process. Easy to use with a digital timer: includes a 7-day digital timer for customizable tumbling cycles, making the polishing process convenient and consistent for users of all levels. Use scenarios: - Hobby setup at home to begin a stone polishing project from raw material. - Transform rough stones found during hiking into finished polished stones for display or jewelry components. - Small workshop or craft space for creating polished stones for jewelry, decor, or DIY projects.