15mm Bearing UCF202 Black Oxide Plated Insert + Square Flanged Cast Housing Mounted BearingUCF202 15mm Mounted Bearing With Black insert One Bearing UCF202 our Bolt Flange Unit with Black Oxide plated Insert, measures an inner diameter of 15mm. Black oxide has certain properties and characteristics that makes it ideal for certain applications. It is used to add corrosion resistance and for appearance. UCF202 black insert Ball Bearing Mounted Bearings Bolt Size: M10 Shaft Diameter: 15mm Basic Load (Cr): 12,800 N Basic Load (Cor): 6,650 N