Material: Made of premium carbon steel, features high flexibility, high hardness and wear resistance. The ball transfer carrier is hardened and plated. Usage: The transfer bearing ball is used for conveying, especially suitable for rotating or diverging parts of the conveying system. It can easily move objects in a horizontal direction. Size: The diameter of the rotated ball: 5/8", the upper diameter of the base: 1.26", the lower diameter of the base: 0.94". Easy to use: The maximum load capacity of a single caster is 15 kg, with 360-degree universal rotation, which greatly reduces labor intensity. Wide application: Transfer casters are widely used in transmission systems, power systems, processing and packaging machinery, and auxiliary machinery and equipment. Can also be used in a variety of non-industrial applications, including retail store displays and airport baggage transfers.