This is a sealed ball bearing, with good dust-proof effect Standardization size, used for machinery manufacturing, equipment installation and maintenance Small friction resistance, low power consumption, high mechanical efficiency With the feature of high stability, high reliability This ball bearing is made of high quality ZrO2 ceramic and PTFE material, features high precision, high speed and low wear Bearing fully made of ceramic with diamagnetic electrical insulation, wear resistance and corrosion resistance, not self-lubricating, high temperature resistance, cold and other characteristics, can be used in extremely harsh environments and special conditions. Features: This ball bearing is made of high quality ZrO2 and PTFE ceramic, features high precision, high speed and low wear. Small frictional resistance , low power consumption, high mechanical efficiency. It is sealed ball bearing, with good dust-proof effect. With the characteristic of high stability, high reliability. Standardization size, used for machinery manufacturing , installation and maintenance of equipment. Specifications: Material: PTFE, ZrO2 ceramic Model: 6001 2RS Dustproof form: 2RS Inner diameter: 12mm/0.5in Outer diameter: 28mm/1.1in Thickness: 8mm/0.3in Quantity: 2 pieces Color: white Moving Column Number: Single Race Type: Deep Groove Raceway Weight: Approx. 38g Package Included: 2 x ZrO2 Ball Bearing