VD042CP0 Thin Section Ball Bearing 4 1/4" x 5 1/4" x 1/2" inch Steel Quality: ABEC 1 VD042CP0 Thin Section Steel Open Ball Bearing, VD042CP0 is ABEC 1 quality, VD042CP0 bearing is Oil Preservative preserved, inner diameter is 4 1/4" inch, outer diameter is 5 1/4" inch and width is 1/2" inch.