Hub axles for FLO Vortex Hubs. Each wheel has one axle. If you do not know when your wheel was manufactured, please use the following guide to help when selecting your freehub.
1.Two FLO stickers on each side = 2012-2015 model. The FLO 30s also use these models.
2.Three FLO stickers on each side = 2016-Current model.
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