Review on Ritchey Carbon 1 Bolt Seatpost 7X9 6Mm by Franklin Richardson

Exactly what I needed. I just bought a new fi'zi:k saddle with carbon rails. I didn't realize the carbon rails are wrapped, which makes them oval instead of round like most saddle rails. This part allowed me to connect the saddle on my TT bike to the aero post. Please note this is a single bolt connector only. When installing, I had to reuse the rubber grommet from my stock 1-bolt yoke. If you need both parts, Ritchey sells them too.