Maximum comfort for all - We want the outstanding features of our CF Allroad Pro Carbon leaf spring seatpost on every road bike, all-road and gravel bike. This is why we offer cyclists who prefer a saddle with 7x9 oval carbon rails the Flip Head Kit compatible with oval rail clamps. The Flip Head Kit fits the straight version of the Ergon CF Allroad Pro Carbon as well as the Setback model. - Use: Allroad/Gravel/Cyclocross, Road - Weight: 20g - Clamp: for Oval Carbon Rails (7x9 mm) - Material: Aluminum