The new Zero carbon seatpost from Ritchey has been designed to offer everything a rider needs with zero offset and at an affordable price. Thanks to the two screw grips in the head section, it ensures sufficient control over the saddle without wobbling.the versatile Ritchey Comp Carbon Zero is a winning combination of performance and value, so whether you're heading out on long weekend road rides or tackling local singletrack, this saddle won't let you down. Specifications : Material : carbon fiber / 6061 alloy 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 : 9Nm (max) Seat collar torque : 6Nm (max) / 7Nm (max) for Ritchey steel frames Weight : 265g (27.2x400mm) Color : matte UD carbon finish