UC201-12mm-BLK Oxide Plated Plated Insert 12mm Bore BearingUC201 12mm BLK Oxide Plated Insert Ball Bearing 12mm Inner Diameter UC201 12mm BLK Oxide Plated Insert Ball Bearing, bearing is wide inner ring with spherical outer ring, bearing is relubrication groove with oil hole on set screw side, bearing is anti rotation pin on side opposite grease groove, bearing is nylon patched class 3A set screws. UC201 12mm BLK Bearing Oxide Plated Insert Ball Bearing Shaft Diameter: 12mm Dynamic load rating: 12800 N Static