Slime Balls 54mm, 99a Mirror Vomits clear with reverse printed see through graphics on newly updated, wider Hardline shape.Hardline shapes feature a wide road surface for stability and consistent slide with a hard edge and conical cut for controlled tricks on coping and edges.All Slime Balls skateboard wheels are sold as sets of 4. Slime Balls Mirror Vomits 99a Skateboard Wheels Clear 54mm