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、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. This is a sealed ball bearing, with good dustproof effect. With the characteristic of high stability, high reliability. Standardization size, used for machinery manufacturing, equipment installation and maintenance. Specifications: Material: PTFE, Ceramic ZrO2 Model: 6803-2 RS Sealed dustproof form: 2RS Inner diameter: 17mm / 0.67inch Outside diameter: 26 mm / 1.02inch Thickness: 5mm / 0.20inch Weight: 6 g Package Included: 1 x ZrO2 Ball Bearing Package List