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、This is a sealed ball bearing, with good dustproof effect 4、Resistant to corrosion and able to operate in harsh conditions 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. This is a sealed ball bearing, with good dustproof effect. Resistant to corrosion and able to operate in harsh conditions. Standardization size, used for machinery manufacturing, equipment installation and maintenance. Specification: Material: PTFE, Ceramic ZrO2 Model: 6001-2RS Sealed dustproof form: 2RS Inner diameter: 12mm / 0.5inch Outside diameter: 28 mm / 1.1inch Thickness: 8mm / 0.3inch Weight: 19g/0.7oz Package list: 1 x ZrO2 Ball Bearing Package List