The 4Pcs Ball Caster Wheels are 2 inch in size and are manufactured in China. These caster wheels are designed for material handling in various industrial and office settings. The ball caster wheels provide smooth and effortless mobility, making them useful for carts, tables, and other equipment that requires easy manoeuvrability. With their sturdy construction and reliable performance, these caster wheels are a practical solution for improving the functionality of different products in a business or office environment.