Product Name : Deep Groove Ball Bearing;Bearing Model : 606Z Bearing Standard(mm) : 6 x 17 x 6;Inner Diameter : 6mm/ 0.23 inch Outer Diameter : 17mm/ 0.66 inch ;Width : 6mm/ 0.23 inch Material : Metal;Color : Silver Tone Weight : 30g;/Set Features metal material, double shielded, to protect the bearing from dust or any possible contamination. Deep groove ball bearings mainly take radial load as well as moderate axial load. With less coefficient of friction, less vibration and noise. Widely used for small motors, household applications, in conveying field, etc. Package Content : 50 x Deep Groove Ball Bearings Only the above package content, other products are not included. Note: Light reflection 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.