Lezyne constructed the CNC Cage entirely of one extruded peice of aluminum. After extrusion, the CNC machining process takes place to finish the cage. It is then heat treated for additional strength. This lightweight design is sturdy and features ribs and a clever top catch which will secure a wide range of bottle sizes. The cage arms bend gently outward, in a gracefully arc, allowing for both security and ease of release when retrieving bottles. The oval mounting hole ports allow for acute positioning of the cage to the frame.