The featherlight, matte natural finish, carbon and Kevlar® fiber composite ø5.5mm tube cage offers ultimate strength and optimized geometry for lighter weight. Includes two aluminum bolts ready to mount and enjoy on your ride.Key Features:Material: Carbon and Kevlar® composite fibers(Note: Due to the unique manufacturing process, there may be surface roughness (voids) on some parts. This is normal and will not affect the performance or strength of the Feza Cage.)Size: 14.5 x 8 x 8 cm / 5.7x 3.1x 3.1Weight: 12gDiameter: Fits standard water bottlesAdded Features: Two aluminum water bottle bolts and T20 Torx® wrench included