UC211-34 Black Oxide Plated Plated Insert 2 1/8 Bore BearingUC211 34 Black Oxide Plated Insert Ball Bearing 2 1 8" inch Inner Diameter UC211 34 Black Oxide Plated Insert Ball Bearing, bearing is wide inner ring with spherical outer ring, bearing is re lubrication 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. Item: UC211 34 Black Bearing Type: Oxide Plated Insert Ball Bearing Shaft Diameter: 2 1 8" inch Dynamic