This item will be shipped within One Week Returns Subject to 15% restocking Fee UCFX16-80mm Flange Unit Medium Duty 4 Bolt Ball Bearing Set Screw Locking 80mm Inner Diameter UCFX16-80mm Flange Unit Medium Duty 4 Bolt Ball Bearing, Bearing is high-grade cast iron, bearing is wide inner ring, relunricatable unit with anti-rotation pin, Standard seal is R-Seal.