Deda Zero 1 Seatpillar Black 27.2mmA great value lightweight option for any bike, Deda's Zero 1 features the same twin-bolt screw adjustment as top-tier seat posts. Its versatile design makes it suitable for bikes of almost every discipline and helps you to achieve a comfortable riding position no matter where or how you ride. Tech SpecsMaterial: 6061 AlloyLength: 350mmDiameter: 27.2mmWeight: 285gCompatible with Di2 internal battery adaptors