Set of 4 Ricta Rapido Wide Skateboard Wheels in 54mm 101a, Ricta's Rapido formula is their most balanced to date and provides maximum speed with smooth control. Rapido wheels guarantee a longer roll with fewer flat spots and offer longer slides when you want it and more control when you need it. The wide profile offers more control and comes with a flatter inside edge for better lockins, you also get double the resistance to flat spots.