Profile Design HC Mount 

Features
Lightweight aluminium crossbars mounts to Aerobar extensions for simple between-the-arms system for mounting a standard bottle cage. easily and securely attaches to extensions up to 130mm (center to center) in width. Can mount above or below extensions for optimal bottle positioning.

Features:

Positions bottle cage in the most aerodynamic position possible.
Constructed with 6061-T6 Aluminum for lightweight and high durability
Compatible for mounting the Aero HC Bottle to accommodate wider or narrower aerobar setups.