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Saris Rollers Aluminum Bi-Fold Roller. When you add Saris rollers into your training routine youll increase your balance control and ability to ride a straight line-all of which translate to more efficiency power and technique on the road.Extra-wide bi-fold design is stable yet stores easily comes fully assembled
Lathe-turned 3.5" aluminum rollers
Belt is adjustable for right or left dismount
Adjustable to most bikes with a 37.5" - 44.5" wheelbase