The lightweight Carbon Bidon Basket offers high strength and optimized geometry for lower weight. Two aluminium screws are included ready for installation. (Note: Due to the unique manufacturing process, some parts may have surface irregularities (voids). This is normal and does not affect the performance or strength of the Fez cage.) Material: carbon Dimensions: 11.7 x 8.2 x 7.8 cm Weight: 10 g Diameter: fits standard cycling water bottles