1. Good Smooth 2. High precision 3. RoHS compliant 4. Lowest price in chinese ... These bearings are offered in ABEC 1 through ABEC7 precision grades, pre-loaded, corrosion protected, grease-lubricated, and ... In addition, mounting features, such as flanges, anti-rotation tabs, and mounting holes can be incorporated on the ... item in this list,please contact us. High precision large thin ball bearings