The product is a pack of 10 precision ball bearings with an inner diameter of 8mm, outer diameter of 22mm, and thickness of 7mm. They are designed to be shielded to prevent dust and debris from entering and causing friction, making them suitable for use in skateboards and other industrial applications requiring smooth and reliable motion. The sealed design ensures that the bearings are protected from external contaminants, allowing for longer-lasting performance and reduced maintenance.