Zefal Aluminium / Plastic Bottle Cage A reliable and easy-to-fit bottle cage for any bike frame, this mixed-material model by Zefal gives a trusted hold to standard sized water bottles. Comprising of an aluminium cage section and a plastic technopolymer, bottle-shaped mounting area, it adds a unique look to your hydration setup. The cage is designed for simple removal and replacement of your fluids and features three eyelets to let you mount it at your preferred height. Features: Material: Technopolymer beam and Aluminium cage (6101 T3) Thickness: 5mm Weight: 40g Buy Zefal Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.