General description Closed with metal shields to protect the bearing from dust or any possible contamination. Generally used for electric motors, wheel bearings, agriculture, transportation, and many more. Technical specifications Model Number: 6800Z Inner Diameter: 10mm / 0.4 inch Outer Diameter: 19mm / 0.75 inch Height: 5mm / 0.2 inch Color: Silver Tone Material: Metal Net Weight: 53g/Set Other information Package Content: 40 x Deep Groove Ball Bearings Note: Reflection light shooting and different displays may cause the color of the item in the picture to differ slightly from the real thing. The measurement allowed error is +/- 1-3 cm.