This item will be shipped within One Week Returns Subject to 15% restocking Fee GRF213-41 Flange Unit Standard 4 Bolt Ball Bearing GRIP-IT 360 Locking 2 9/16" Inner Diameter GRF213-41 Flange Unit Standard 4 Bolt Ball Bearing, Bearing is high-grade cast iron, bearing is wide inner ring, bearing is relubricatable unit with anti-rotation pin, bearing is black oxide plated inner and outer rings, Standard seal is R-Seal.