●LED light up itself generating power, no batteries required! Cool especially in darkness, Very bright, Suit for 608zz bearing(not included) ●Hardness: 90A,Durable material: PU. Coil count: 800 laps,The coil material: copper ●64mm/68mm/72mm/76mm/80mm high-grade urethane wheels for choice. ●Green/Red/Blue/White/Multi-color for choice ●Send by Epacket shipping way,generally,it will take 7-20days to buyer