ITEM NAME:White 6903 17X30X7mm High Precision Full Ceramic ZrO2 Ball Bearing Z1I6 White 6903 17X30X7mm High Precision Full Ceramic ZrO2 Ball Bearing Z1I6 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
