Designed for KomeStone Tumblers: As our tumblers continue to improve, our belts are also upgraded to provide enhanced durability and a longer lifespan, ensuring your tumbler delivers reliable performance for years to come. Perfect Compatibility with K1 & K1 Pro Models: Specifically engineered for KomeStone K1 and K1 Pro tumblers. Not compatible with other models. Do not use non-official belts, as even compatible ones may reduce tumbler lifespan. Upgraded PU Belts: Made from high-quality PU material with superior wear resistance and heat tolerance, delivering long-lasting stable performance and reducing the need for frequent replacements, so your tumbling process is worry-free. Premium Material Choice: Our tumbler design team found that PU material is the optimal choice for tumblers, significantly extending belt life and effectively preventing breakage. Official KomeStone Certified Belts – Lifetime Free Replacement: Choose genuine KomeStone certified belts for the best performance. If your PU belt breaks, enjoy a lifetime free replacement along with our authenticity guarantee. KomeStone Rock Tumbler Belt Replacement 5-Pack for K1, K1 Pro, K3 – Includes 2 Nearly Unbreakable PU Belts & 3 Enhanced Rubber Belts Upgrade your tumbling experience with KomeStone replacement belts designed for K1, K1 Pro, and K3 Rock Tumblers. This 5-pack combo includes 2 nearly unbreakable PU belts for superior durability and 3 enhanced rubber belts for continued reliability. Our PU belts offer exceptional resistance to wear, heat, and cracking, ensuring a longer lifespan compared to traditional rubber belts. For best results, use the PU belts for improved tumbling performance, while keeping the rubber belts as future backups. Key Features: Upgraded Combo: Includes 2 nearly unbreakable PU belts and 3 enhanced rubber belts, engineered for long-term performance. Optimal Performance: The PU belts offer superior strength and resistance to breakage, making them perfect for heavy-duty tumbling sessions. Ideal for K1, K1 Pro & K3: Perfectly compatible with KomeStone K1 and K1 Pro rock tumblers, as well as K3 models. Official KomeStone Upgrade: Only KomeStone-certified parts offer continuous updates and perfect compatibility with your tumbling machine. Not Compatible with K2 or K4: These belts are specifically designed for K1, K1 Pro, and K3 rock tumblers. Not suitable for K2 or K4 models. Choose official KomeStone belts for optimal performance and peace of mind with every tumbling session.