20x40x12mm Ball Bearing 20mm x 40mm x 12mm - Non-Standard20x40x12mm Sealed Ball Bearing Non Standard Size Deep Groove Design 20mm ID x 40mm OD x 12mm Width This 20x40x12 non standard sealed ball bearing is perfect for applications needing a compact metric size that isnt found in typical catalogs. Its pre greased and ready to go right out of the box, great for repair jobs and custom builds. Deep groove type for steady radial load support Inner diameter: 20mm Outer diameter: 40mm Width: 12mm Rubber sealed on