Features: _x000D_ This ball bearing is made of high quality ceramic ZrO2 and PTFE material, features high precision, high speed, and wear small. _x000D_ Small frictional resistance, low power consumption, high mechanical efficiency. _x000D_ This is a sealed ball bearing, with good dustproof effect._x000D_ _x000D_ Resistant to corrosion and able to operate in harsh conditions._x000D_ _x000D_ Standardization size, used for machinery manufacturing, equipment installation and maintenance. _x000D_ _x000D_ _x000D_ Specification: _x000D_ Material: PTFE, Ceramic ZrO2 _x000D_ Model: 6001-2RS_x000D_ _x000D_ Sealed dustproof form: 2RS_x000D_ _x000D_ Inner diameter: 12mm / 0.5inch_x000D_ Outside diameter: 28 mm / 1.1inch_x000D_ Thickness: 8mm / 0.3inch_x000D_ Weight: 19g/0.7oz_x000D_ _x000D_ _x000D_ _x000D_ Package list: _x000D_ 1 x ZrO2 Ball Bearing 1This ball bearing is made of high quality ceramic ZrO2 and PTFE material, features high precision, high speed, and wear small. 2Small frictional resistance, low power consumption, high mechanical efficiency 3This is a sealed ball bearing, with good dustproof effect 4Resistant to corrosion and able to operate in harsh conditions 5Standardization size, used for machinery manufacturing, equipment installation and maintenance.