Product Name: Deep Groove Ball Bearing;Inner Diameter: 12mm/ 0.47 inch ;Outer Diameter: 28mm/ 1.1 inchWidth: 8mm/ 0.31 inch ;Color: Silver ToneMaterial: Metal;Net Weight: 303gModel No.: 6001ZThe features are covered by 2 metal shields, one shield on each side, to protect the bearing from dust or any possible contamination.Commonly used for electric motors, wheel bearings, agricultural machinery, conveyors and more.Package Contents:15 deep groove ball bearingsOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.