Re-engineered clamp with an optimized center-loaded bolt design equalizes load distribution to ease position adjustments. With this clamp set you will be able to clamp metal 7 x 7mm saddle rails and Specialized FACT carbon 7 x 9mm saddle rails. Features: 7 x 7mm and 7 x 9mm replacement clamp set for all Specialized road seatposts equipped with a single-bolt cylindrical wedge clamp design Redesigned clamp for better clamping and non-slipping of the saddle Compatible with: Shiv Carbon Post, S-Works Carbon Post, CG-R Carbon Post, S-Works SL Pave Carbon Post, Command Post XCP, Venge Carbon Post