Miniature Ball Bearing, Bearing Industry Number 688, Bore Diameter 8 mm, Closure Double Shielded, Outer Ring Width 5 mm, Outside Diameter 16 mm, Ring Material Alloy Steel, System of Measurement Metric, ABEC Rating 1, Cage Type Shielded, Dynamic Radial Load Capacity 283 lbf, Flange Diameter Not Applicable, Flange Thickness Not Applicable, Flange Type Non-Flanged, Includes Retaining Ring No, Lubricant Material Multitemp Grease