Radial Ball Bearing, Bearing Industry Number 6004, Bore Diameter 20 mm, Closure Double Shielded, Outer Ring Width 12 mm, Outside Diameter 42 mm, Ring Material Alloy Steel, System of Measurement Metric, Cage Material Steel, ABEC Rating 1, Ball Material Alloy Steel, Bore Diameter Tolerance +0/-0.010 mm, Dynamic Radial Load Capacity 10,400 N, Fillet Radius 0.6 mm, Includes Retaining Ring No, Lubricant Material Pillowblock Grease