Radial Ball Bearing, Bearing Industry Number 61901, Bore Diameter 12 mm, Closure Double Shielded, Outer Ring Width 6 mm, Outside Diameter 24 mm, Ring Material Alloy Steel, System of Measurement Metric, Cage Material Steel, ABEC Rating 1, Application Radial and Thrust Load Application, Bore Diameter Tolerance +0/-10 micron, Dynamic Radial Load Capacity Not Available, Flange Diameter Not Applicable, Flange Thickness Not Applicable, Includes Retaining Ring No, Lubricant Material Grease WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov - Nickel (Metallic)