Product Name:Deep Groove Ball Bearing; Model No:625ZZ Inner Diameter:5mm / 0.2 Inch; Outer Diameter:16mm / 0.63 Inch Width:5mm / 0.2 Inch; Color:Silver Tone :Metal; Weight: 50g/Set Features: 5mm inner diameter, 16mm outer diameter, 5mm width, Ball bearing. Closed with 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, agriculture, conveyor and much more. Package Contents: 100 x Ball Bearing Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.