Weight:132g Material:metal Outer Diameter:35mm / 1.4 inch Inner Diameter:15mm /0.6 inch Thickness:11mm / 0.4 inch This good precision 6202RZ bearing provide high speed and the convenience of removal shields for cleaning and relubrication. This is the perfect bearing for all your roller-skating and skateboard applications. Bearing has Rubber Seals to protect the bearing from dust or any possible contamination, also bearings are pre-lubricated with grease. Colour:Silver + Black Package Contents: 3 x Deep Groove 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 the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.