Ritchey WCS-Carbon 1-Bolt seatpost, 27.2 x 350 (3K) Clamp Style: Std RailsDiameter: 27.2mmDiameter: 27.2mmMaterial: CarbonMax Height: 245mmOffset: 25mmSeatpost Color: 3K carbonSeatpost Color: CarbonSeatpost Diameter: 27.2mmSeatpost Length: 350mmWeight: 190g