Ceramic bearings are divided into Full Ceramic Bearings-Inner/outer races and balls are made of either Silicon Nitride (Si3N4), 6000CE 6001CE 6002CE 6003CE 6004CE 6005CE 6006CE 6007CE 6008CE 6009CE 6010CE 6011CE 6012CE 6013CE 6014CE 6015CE 6016CE 6017CE 6018CE 6019CE 6020CE 6021CE 6022CE 6024CE 6026CE 6028CE 6030CE 6032CE 6201CE 6202CE