7/8" Bearing UCF205-14 Black Oxide Plated Insert + Square Flanged Cast Housing Mounted BearingUCF205 14 Black Oxide Plated Insert Four Bolt Flange Unit Set Screw Type 7 8" inch Inner Diameter UCF205 14 Black Oxide Plated Insert Four Bolt Flange Unit, bearing is Set Screw Type, Inner Diameter is 7 8" inch . Black oxide has certain properties and characteristics that makes it ideal for certain applications. It is used to add corrosion resistance and for appearance. UCF205 14 Black Oxide Plated Insert Flange Mounted Bearing Bolt Size: 3 8" inch