R16ZZ Shielded Bearing - 1" ID x 2" OD x 1/2" WidthR16ZZ Shielded Ball Bearing 1" x 2" x 1 2" R16ZZ 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). R16ZZ Ball Bearing Deep Groove Ball Bearing Shield Double metal shields (ZZ) Quality: Electric Motor Quality Dimensions: 1" x 2" x 1 2" inch Inner Diameter: 1" inch Outer Diameter: 2" inch