VB030CP0 Thin Section Ball Bearing 3" x 3 5/8" x 5/16" inch VB030CP0 Thin Section Steel Open Ball Bearing, VB030CP0 is ABEC 1 quality, VB030CP0 bearing is Oil Preservative preserved, inner diameter is 3" inch, outer diameter is 3 5/8" inch and width is 5/16" inch.