The Profile Design RM-10 is a streamlined rear-mounted bottle carrier designed for compatibility with any seatpost using 10mm thru-rail hardware (Ritchey 10mm Saddle Clamp standard). It enables the rider to replace the seat post cylinder nut that secure the clamp to the seatpost with a RM-10 bracket that holds a hydration system. The Arch clamp allows for 14°of adjustment allowing the cage to slide under saddles with a transition tab. To add to the versatility this system can run 1 or 2 cages to customize for training or racing. Its low-profile design ensures that the bottles remain in the aero shadow of the rider, delivering a drag-neutral hydration solution. Replaces the cylinder nuts on the 10mm seatpost saddle clamp standard. Patent pending arch clamp provides 14 degrees of adjustment Aero Design: Keeps bottles in the rider’s aero shadow, reducing drag and maintaining aerodynamic performance. Tech Specs Armrest Material: 6061-T6 AL Post Material: Steel Compatibility: 10mm Thru-Rail Compatibility Post Insert Length: 93mm Adjustment: 14 degrees of tilt adjustment Cage Material: Injected Nylon/Glass Fiber (Vise Cage) Capacity: 1 or 2 cage compatible Cage: Vise Color: Matte Black Weight: 130G * Includes 1 lightweight Profile Design Cage Compatible Bikes Cervelo P-Series (Depends on year, email us to check compatibility) SCOTT Plasma GURU Stevens Louis Garneau Diamondback Kestrel 4000 Fuji D6/Norcom BH Aero Neil Pryde