This item will be shipped within One Week Returns Subject to 15% restocking Fee FHPFLZ204-20mm Flange Pressed Steel 2 Bolt Ball Bearing Eccentric Locking Collar 20mm Inner Diameter FHPFLZ204-20mm Flange Pressed Steel 2 Bolt Unit Ball Bearing, Bearing is two light duty and self-aligning pressed steel housings, bearing is zinc plated stamped steel, bearing is narrow inner ring, bearing is Non-relubricatable, Standard seal is RST tight riding, full cover, metal shroud seals.