High Grade Material for Durability - Made from hard, wear- carbon steel, these roller ball bearings boast a bright, burr-free that resists rust and operates noiselessly. Ball bearing robust construction withstands high stress and heavy loads, significantly extending the lifespan and reliability of the bearings. Universal Size - The size of the roller wheels diameter is about 5/8 inch, roller ball transfer bearings boast a universal size of 1.2 x 0.8 inches/ 3.2 x 2.1 cm (D x H), making them compatible with a wide range of applications. Their standardized dimensions they can be easily integrated into different setups, from ball casters in machinery to low-profile casters in furniture, providing a versatile solution for your movement needs 360 Degree Rotation for Efficient Operation - Featuring a 360-degree rotation capability, these 1-inch ball casters facilitate smooth and right directional movement. This enhances efficiency, especially in transferring goods in various directions, The seamless rotation reduces effort and increases efficiency in your operations. 40 Pcs Roller Ball Set - The roller bearing providing a reliable stock that meets most industrial and commercial needs. This ample supply ensures users 't face a shortage, offering continuous and uninterrupted usage for various applications. Broad Application Spectrum - These conveyor rollers are not just limited to industrial use; they're easily installable on light furniture and can be extensively used in conveyor line installations, processing systems, wooden boxes, transmission furniture, workbenches, home appliances, and transmission systems. Their wide application range makes them a versatile addition to numerous environments., Weight: 3.78423472723 pounds, Manufacturer: Aisuoka