WOBF88 ZZX Flanged Shielded Bearing 1/4x1/2x3/16 inchWOBF88ZZX Flanged Shielded Ball Bearing 1 4" x 1 2" x 3 16" inch One Ball Bearing WOBF88ZZX Flanged Shielded Ball Bearing, Bearing inner diameter is 1 4" Inch, Bearing outer diameter is 1 2" Inch and Bearing width is 3 16" Inch, each bearing has 2 metal shields to protect the bearing from dust or any possible contamination, also bearing is pre lubricated with grease. Item: WOBF88ZZX Ball Bearing Type: Deep Groove Ball Bearing Closures: 2 Metal Shields