RollerBones Premium speed/derby wheel with an extruded aluminum hub.
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Superior roll and speed. Best wheel on the planet.
RollerBones Turbo Wheels are available in: 
Black - 88A, 92A, 94A, 97A, and 101A
White - 88A, 92A, 94A, 97A and 101A
62mm x 38mm
Comes in set of 8 wheels.