Bike Bottle Holder Mount Adapter Aluminum Alloy Universal Bicycle Saddle Rail Mount for 2 Bottle Cages 1Adjust Height: Bike bottle holder mount adapter height can be easily adjusted according to your needs, suitable for most mountain and road bikes. 2For 2 Bottle Cages: Bottle holder mount adapter can be used for dual bottle cages, which can provide additional kettle capacity for long distance riding needs. 3For Outdoor Use: Bike bottle holder mount adapter is suitable for outdoor sports enthusiasts, which can meet their needs for water and drinks. 4Easy Install: Road bicycle saddle rail mount is easy to install under the bicycle saddle, does not affect the riding comfort, bring you much convenient. 5Aluminum Alloy: Bike saddle rail mount made of aluminum alloy material, firm and sturdy, which can ensures that the kettle is securely fixed without fear of falling.