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.<br> 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.<br> This miniature bearing is made of high quality zirconium dioxide ceramic for low noise and long service life.<br> Ceramic bearing is impervious to corrosion and rarely require lubrication.<br> size:8mm*22mm*7mm<br> Material:ceramics<br> colour:white<br> Package Contents:<br> 1 * Bearing<br> Only the above package content, other products are not included.<br> Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.