Features 1、This ball bearing is made of high quality ceramic ZrO2 and PTFE 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、With the characteristic of high stability, high reliability. 5、Standardization size, used for machinery manufacturing, equipment installation and maintenance. Specification Features: This ball bearing is made of high quality ceramic ZrO2 and PTFE 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. With the characteristic of high stability, high reliability. Standardization size, used for machinery manufacturing, equipment installation and maintenance. Specification: Material: PTFE, Ceramic ZrO2 Color: white Model: 609 Inner diameter: 9mm/0.4in Outside diameter: 24mm/0.9in Thickness: 7mm/0.3in Weight: Approx.15g/0.5oz Package list: 1x ZrO2 Ball Bearing Package List