Kalloy Straight 25.8 x 300mm Clamp Style: 7/8" StraightDiameter: 25.8mmDiameter: 25.8mmMaterial: AluminumMax Height: 305mmOffset: 0mmOffset: 20mmSeatpost Color: SilverSeatpost Diameter: 25.8mmSeatpost Length: 300mmWeight: 150g