A single or multiple-row antifriction bearing used with or without inner or outer races characterized by relatively small size rollers usually not ranging above 0.250 inch (6.35mm) diameter and generally longer in length in relation to diameter.
13.977 millimeters minimum and 13.995 millimeters maximum overall outside diameter, 19.75 millimeters minimum and 20.00 millimeters maximum overall width, rigid alignment type, steel overall material, 7.991 millimeters minimum and 8.000 millimeters maximum bore diameter