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1)Material:Super high rebound PU with alloy core2)Wheel size:100*24mm,110*24mm
3)Hardness:88A
4)Both urethane color and alloy core color can be made any color
5)Five spoke alloy core, suitable for maximal exercise
Available bearings: 608 bearing, ABEC 5/7/9/11
Offer OEM service. High quality at reasonable price