This item will be shipped within One Week Returns Subject to 15% restocking Fee FHLF204-20mm Flange Light Duty 2 Bolt Unit Ball Bearings Eccentric Locking Collar 20mm Inner Diameter FHLF204-20mm Flange Light Duty 2 Bolt Unit Ball Bearing, Bearing is Light Duty and high grade cast iron, ideal for applications with limited mounting space, bearing is narrow inner ring, bearing is Non-relubricatable, Standard seal is RST tight riding, full cover, metal shroud seals.