Material: Ball casters are made of stainless steel, which features durability, strength and wear resistance. Advantages: Ball bearing design ensures smooth movement, low friction and minimizes the force required to move objects. This smooth movement allows for efficient and accurate positioning of items. Application: Roller ball bearing is a type of bearing designed to facilitate the smooth and easy movement of objects in all directions. They are commonly found in conveyor systems, assembly lines, material handling equipment, industrial machinery, retail displays and furniture.