Tubular Carbon Fiber Bottle Cage – 10g Experience the ultimate in lightweight cycling accessories with this featherlight, matte natural finish carbon fiber composite bottle cage. Designed with a diameter of ø5.5mm, it offers exceptional strength and optimized geometry for reduced weight, enhancing your bike’s performance. The package includes two aluminum bolts for quick and secure mounting, allowing you to enjoy a seamless ride. The R10 cage features an optional Bottle Glide mount, facilitating easy bottle entry and access while protecting your frame’s finish from abrasion during hydration stops.