Features 1、This miniature bearing is made of high quality zirconium dioxide ceramic for low noise and long service life 2、Ceramic bearing is impervious to corrosion and rarely require lubrication 3、Bearing has a 8mm inner diameter, a 22mm outer diameter and a 7mm thickness 4、It is great for 8mm shaft/rod projects such as mechanical equipment, electrical instrument, toy, door and window 5、608 bearing is used in a wide variety of applications including, electric motors, home appliances, toys and much more Specification Description: Miniature ball bearing is available ball bearing of small size. This miniature ball bearings has a 8mm inner diameter, a 22mm outer diameter and a 7mm thickness. Ball bearing of this size is great for precision work and applications that require a lot of functional mechanical parts, such as mechanical equipment, electrical instrument, toy, door and window. Features: This miniature bearing is made of high quality zirconium dioxide ceramic for low noise and long service life. Ceramic bearing is impervious to corrosion and rarely require lubrication. Bearing has a 8mm inner diameter, a 22mm outer diameter and a 7mm thickness. It is great for 8mm shaft/rod projects such as mechanical equipment, electrical instrument, toy, door and window. 608 bearing is used in a wide variety of applications including, electric motors, home appliances, toys and much more. Specifications: Material: Zirconium dioxide ceramic Inner Diameter: 8mm / 0.31" Outer Diameter: 22mm / 0.86" Thickness: 7mm / 0.27" Quantity: 1pc Package Includes: 1 x Bearing Package List