1、This ball bearing is made of high quality ceramic ZrO2 material, features high precision, high speed, and wear small. 2、Small frictional resistance, low power consumption, high mechanical efficiency. 3、Resistant to corrosion and able to operate in harsh conditions. 4、Ceramic bearing is impervious to corrosion and rarely require lubrication. 5、As the elastic modulus of ceramics is higher than that of steel, it is not easy to deform under stress, so it is beneficial to improve working speed and achieve higher accuracy. Features: This ball bearing is made of high quality ceramic ZrO2 material, features high precision, high speed, and wear small. Small frictional resistance, low power consumption, high mechanical efficiency. Resistant to corrosion and able to operate in harsh conditions. Ceramic bearing is impervious to corrosion and rarely require lubrication. As the elastic modulus of ceramics is higher than that of steel, it is not easy to deform under stress, so it is beneficial to improve working speed and achieve higher accuracy. Specification: Holder Material: TN Engineering Plastics Ball Bearing Material: Ceramic ZrO2 Model: 696 Inner Diameter: 6mm / 0.2inch Outside Diameter: 15mm / 0.6inch Thickness: 5mm / 0.2inch Color: White Rolling Column Number: Single Raceway Type: Deep groove raceway Weight: Approx. 5g / 0.2oz Package List: 1 * ZrO2 Ball Bearing Note: 1. Please allow slight error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.