R20ZZ Shielded Bearing 1 1/4x2 1/4x1/2 inchR20ZZ Shielded Ball Bearing 1 1 4" x 2 1 4" x 1 2" R20ZZ Shielded Ball Bearing, bearing is made from Chrome Steel, bearing has 2 Metal Shields to protect the bearing from dust or any possible contamination, this bearing is self lubricated (bearing is already greased). Item: R20ZZ Ball Bearing Type: Deep Groove Ball Bearing Closures: Metal Shields Quality: Electric Motor Quality Dimensions: 1 1 4" x 2 1 4" x 1 2" inch Inner Diameter: 1 1 4" inch Outer