This item will be shipped within One Week Returns Subject to 15% restocking Fee FHFX201-12mm Flange Ductile 2 Bolt Unit Ball Bearings Eccentric Locking Collar 12mm Inner Diameter FHFX201-12mm Flange Ductile 2 Bolt Unit Ball Bearing, Bearing is standard duty and high strength ductile iron, bearing is narrow inner ring, bearing is Non-relubricatable, Standard seal is RST tight riding, full cover, metal shroud seals.