Attributes . 25MM Bore; 62MM Outside Diameter; 68MM Width; Open Enclosure; ABEC 7 | ISO P4 Precision; Steel Ball Material; 4 (1 Quadruplex Set) Bearings; 62 Degree Contact Angle; Polyamide Cage Material; 1 Rib Inner Ring and Outer Ring Raceway Type; Ball Bearing . Names