RBS stocks a large selection of bearings for your supercharger needs. These are single row ball bearings that are typically used in street to light race applications. They are sealed and will provide years of trouble free service on your supercharger. Fits most GM type roots blowers 3-71 thru 8-71.
Measurements are 2.048" O.D. x .590" thick with an .985" I.D. Bearings are sold individually.