High quality 2-1/2" pillow block bearing. The bearing has a wide inner ring with two set screws for attaching to the shaft. Housing is cast iron with a grease zerk for re-lubing the bearing.Dimensions:Bore: 2-1/2"Bolt hole to bolt hole: 7.992 in. (203mm)Overall length: 10.437 in. (265mm)Shaft height: 3 in. (76.2mm)Overall height: 5.866 in. (149mm)Bolt hole: 1 in. (25mm)