Featuresdiameter 59mmwidth 38mmyellow colourway throughoutbearings sold separatelysold in packs of 4materialsdurometer 88a polyurethaneput yourself on the map with the pop roller derby wheels from radar broadcasting all of the right signals with its revolutionary design these rad rollers are sure to have everyone tuning into your frequency designed to provide good grip across the board the new pop wheels have a smooth controlled ride making them the perfect wheel for derby skaters that