... -3,ABEC-5 ,ABEC-7 2:full ceramic bearing or ceramic hybrid bearing 3:special requirements available The strong ability of manufactring ... them at least ABEC-5 precision .2:Our ceramic hybrid bearing ,full ceramic bearings had exported to Germany ,USA ,Russia ,Australia ... ......3:Full ceramic bearings with high quality, full ceramic special bearing .We are not only the manufacturer ,but also you will ...