Precision Ball Bearing; 50MM Bore; 72MM Outside Diameter; 24MM Width; 2 Seals Enclosure; ABEC 7 | ISO P4 Precision; Steel Ball Material; 2 (1 Pair) Bearing; 17 Degree Contact Angle; Phenolic Cage Material

Precision Ball Bearing; 17MM Bore; 35MM Outside Diameter; 20MM Width; Open Enclosure; ABEC 5 | ISO P5 Precision; Steel Ball Material; 2 (1 Pair) Bearing; 15 Degree Contact Angle; Nylon Cage Material