ITEM NAME:3 Pcs 627ZZ Deep Groove Roller Blade Ball Bearings New F2F9 3 Pcs 627ZZ Deep Groove Roller Blade Ball Bearings New F2F9 Product Name : Groove Ball Wheel Bearings;Type : 627ZZ Materal : Carbon Steel;Outer Diameter : 21mm/ 0.826" Inner Diameter : 7mm/ 0.275";Thickness : 6mm/ 0.236" Color : Silver Tone;Weight : 36g These good precision 627zz bearings provide high speed and the convenience of removal shields for cleaning and relubrication. This is the perfect bearing for all your rollerblade and skateboard applications. Package Content : 3 x Groove Ball Wheel Bearings Note:Light shooting 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..These good precision 627zz bearings provide high speed and the convenience of removal shields for cleaning and relubrication.