6204LU Sealed Ball Bearing20mm x 47mm x 14mm 6204 LU Sealed Ball Bearings, metric standard bearing 6204LU has rubber Seals to protect the bearing from dust or any possible contamination, 6204LU bearings are lubricated with grease, 6204LU is single row, radial, deep groove ball bearings, the chrome steel balls are separated by a steel cage, 6204LU has the dimensions 20mm ID x 47mm OD x 14mm wide, here is the 6204LU catalog: Item: 6204LU Ball Bearing Type: Deep Groove Ball Bearing Design Standard: Metric Quality: Standard Precision Inner and Outer Rings Material: Chrome Steel Balls Material: Chrome Steel Cage Material: Steel Band: VXB Closures: Rubber Sealed Lubrication: Self Lubricated (Grease) 6204LU Size: 20mm x 47mm x 14mm Inner Diameter: 20mm (Bore/ID) Outer Diameter: 47mm (OD) Width: 14mm Quantity: One Bearing