This item will be shipped within One Week Returns Subject to 15% restocking Fee FHSFX203-17mm Flange Ductile 2 Bolt Unit Ball Bearings Set Screw Locking 17mm Inner Diameter FHSFX203-17mm 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.