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RCM. 6004 2RS Double-Sealed Ball Bearing (20x42x12 mm) – Pack of 10The RCM. 6004 2RS is a high-quality, double-sealed ball bearing crafted for smooth, low-friction performance across a wide range of applications. With precise dimensions of 20mm inner diameter, 42mm outer diameter, and 12mm width, it’s ideal for motorcycles, electric motors, skates, and even wooden mechanical setups.Built with high-grade steel, this bearing ensures strength, durability, and resistance to wear. The double-sealed design keeps grease in and dust or moisture out—offering long-lasting reliability with minimal maintenance. Whether you're working on vehicle repairs, motor upgrades, or DIY projects, this bearing is engineered for consistent performance under demanding conditions.