The CycleOps Rollers use lathe-turned rollers with precision bearings. The belt is adjustable for right or left dismount. Adjustable to fit any size bike. Lathe-turned 3.5″ rollers on the PVC version and 3.25″ on the aluminumExtra-wide bi-fold design is stable yet stores easily, comes fully assembledBelt is adjustable for right or left dismountAdjustable to fit any size bikeResistance unit works on aluminum rollers68 decibels @ 36″ 20 mph

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