Miniature Ball Bearing Bearing Industry Number R166 Bore Diameter 3/16 in Closure Open Outer Ring Width 0.125 in Outside Diameter 3/8 in Ring Material Stainless Steel System of Measurement Inch Cage Material Steel Cage Type Ribbon Dynamic Radial Load Capacity 159.8471 lbf Extended Inner Ring Yes Extended Inner Ring Width 0.125 in Fillet Radius 0.0039 in Finish Chrome Plated Flange Type Non-Flanged Includes Retaining Ring No Lubricant Material Oil