Wolfride Bicycle Water Bottle Cage Adapter Universal Bike Frame Handlebar Tube Bottle Cages Holder Mount Adapter Adjustable Super toughness engineering plastics, lightweight and durable Fixed seat can be 360 degrees rotation, easy to install and remove Great originality, your bottle cage can be installed anywhere you want, more convenient Universal design, perfect fit for all standard bike water bottle cage Perfectly fit for all kind of the bicycle applicable on frame / handlebar / tube/ pipe / rod (diameter 15mm-42mm), no need to drill holes