Cannondale Three 27.2mm Seatpost - 350mm - BlackCannondale Three 27. 2mm Seatpost 350mm Black Discover the perfect riding position with the Cannondale Three Seatpos! This lightweight 2 bolt rocker head with micro adjustment allows you to quickly fine tune your ride. Constructed from 6061 alloy to ensure a sturdy and reliable feel, this seat post offers a 5mm setback and is compatible with universal rails, so you can experience ultimate comfort while you ride. 2 bolt rocker head with micro