The redesigned Zero seatpost offers non-slip seat travel and high adjustability thanks to the front and rear bolt-on rails. Thanks to the double fixings, they guarantee the stability of the saddle, whether on the move or when changing, the saddle stays where it should be. Specifications : Material : carbon fiber Diameter : 27.2, 30.9, 31.6mm Total length : 400mm (including 100mm of minimum insert) Offset : zero Saddle clamp : 2-bolt fore/aft Saddle clamp torque : 7Nm (max) Seat collar torque : 6Nm (max) / 7Nm (max) for Ritchey steel frames Weight : 200g (27.2x400mm) Color : matte UD carbon finish