Romosste Carbon Fibre Cycling Bike Bicycle Drink Water Bottle Holder Cage Rack Will not face a strong impact on the deformation and fracture Holding power keeps the bottle in place when riding over rough terrain. The design is convenience to hold and remove the bottle. Suitable for MTB and road use. Material: Carbon Fibre. Package Include: 1 pcs x Carbon Fibre Bottle Cage, 2 x screw