Fizik Cyrano Bicycle R1 Seatpost (Made out of Carbon) Made of Carbon Filament Wound quill with Ergal Aluminum clamp components for excellent strength and durability, while maintaining an extremely light weight. Optimised cradle position and pivot balance ensures the same support and performance right through the widest range of seat tube and personal preference angles. T25 titanium bolts and thumbwheel adjustment combine security with easy micro adjust accuracy. The 25mm lay-back means direct positional replacement of most original fit seatposts. Easy installation and personalized adjustment capability.