Welcome to our factory where we bring you the highest quality 688-ZZ miniature ball bearings. These bearings have an inner diameter of 8mm, an outer diameter of 16mm and a width of 5mm. They are made of high-quality materials that make them strong and durable. They are perfect for use in applications that require high precision, low friction, and smooth operation. These 688-ZZ ball bearings are commonly used in the automotive industry, robotics, medical devices, and many other fields. At our factory, we focus on producing the highest quality products to ensure that our clients get the best value for their money. You can trust us to deliver your order within the shortest possible time and at an affordable price. Contact us today and place your order!