Featuresdiameter 77mmwidth 508mmcontact patch 445mmcore largesold as a pack of 4 bearings sold separatelymaterialsdurometer 78a polyurethanekick it up a gear with the express longboard wheels from metro offering a larger diameter and width to optimise speed the express wheel is metro39s pride and joy when it comes to leaving everyone else in the dust suitable for general outdoor use and primarily for downhill skating blaze your own trail by picking up a pack today