A caster is a wheeled device that allows objects to move easily. Typically found on furniture, carts, and equipment, casters can swivel or remain fixed in one direction. They come in various sizes and materials, making them suitable for different surfaces and loads. Casters are often used in settings like homes, offices, and warehouses. They can be attached to items such as chairs, tables, and storage bins, enabling smooth movement. Some casters also have brakes, which help secure the object in place when needed.