roller skate wheel 1.good at grip and durable 2.55/65mm,88a,90a roller skate wheel ... wheel made in super high rebound pu,with excellent quality and reasonable price.1)material: super high rebound pu,plastic ... make in any hardness as your requirement We accept OEM and DIY service, please don't hesitate to contact us ... Quad skate wheel for racing,inline pu wheel reach CE and ISO,metal roller skate wheels