This item will be shipped within One Week Returns Subject to 15% restocking Fee HC206-30mm Bearing Insert Eccentric Locking Collar 30mm Inner Diameter HC206-30mm Bearing Insert, Bearing is Standard load capacity, bearing is Wide inner ring with spherical outer ring, Bearing is relubrication groove with oil hole on set screw side, bearing has oil hole opposite groove makes it interchangeable with all manufacturers, bearing is nylon patched class 3A set screw, Standard seal is R-Seal.