Kalloy Alloy Bicycle Seatpost w/Clamp - 350mm BLACK Clamp Style: Std RailsDiameter: 27.2mmDiameter: 27.2mmMaterial: AluminumMax Height: 255mmOffset: 20mmSeatpost Color: BlackSeatpost Diameter: 27.2mmSeatpost Length: 350mmSetback: 20mmWeight: 350g