EE2S ZZ Miniature Shielded Bearing 1/4" x 3/4" x 9/32"EE2SZZ Shielded Ball Bearing 1 4" x 3 4" x 9 32" EE2SZZ Shielded Ball Bearing, a standard bearing size commonly used in a variety of industrial and commercial applications, measures an inner diameter of 1 4" inch, outer diameter is 3 4" inch and the width is 9 32" inch, each Comes with double metal shields (ZZ) to keep out dust and dirt, also bearing is pre lubricated with grease and bearing is made from Chrome Steel. EE2SZZ Ball Bearing Deep Groove