Product name: Deep groove ball bearingBearing model: 628ZMaterial: metalColor: silver toneWeight: 18gClosed with 2 metallic covers, a protect on both sides to guard the bearing from dust or any contamination.It is often used for electrical motors, wheel bearings, agriculture, conveyors and far more.Inner diameter: 8mm / 0.31 inch;Outer diameter: 24mm / 0.94 inchWidth: 8mm / 0.31 inchPackage Content: 1 x Deep groove ball bearingOnly the above kit content, different products aren't included.Note: Light shooting and varied exhibits may cause the colour of the thing in the photo a bit varied from the genuine thing. The size allowed error is +/- 1-3cm.