5/8" x 1 3/8" x 11/32" Plastic Radial With Glass Bearing One Bearing 5/8" x 1 3/8" x 11/32" Plastic Radial With Glass Bearing, Bearing is Polymer Raceways with glass, inner diameter is 5/8" inch, outer diameter is 1 3/8" and width is 11/32" inch.