667-1106, SKF, SKF 6304-2Z/C3 Single Row Deep Groove Ball Bearing- Both Sides Shielded 20mm I.D, 52mm O.D, Brand SKF, Inside Diameter 20mm, Outside Diameter 52mm SKF 6304-2Z/C3 Single Row Deep Groove Ball Bearing- Both Sides Shielded 20mm I.D, 52mm O.D