Specifications: Bottle rack is made of aluminum alloy material, lightweight and durable to use. The edging is smoothly polished, could not grinding/wiping the paint surface of the water cup. The bottle cage has four supporting points, which can hold the bottle firmly. Loosen the middle screw, the kettle can be rotated 90 degrees. Bake paint process on the surface of the bottle cage, long-lasting color, corrosion resistance, high temperature resistance. Strong and tough, more user-friendly, can hold a variety of diameter drinks or water cups. Item Name: Bicycle Bottle Holder Material: Aluminum Alloy Suitable For: Motorcycles, Bicycles, Electric Vehicles Attributes: Type 1: Unilateral Bracket does not Include a Base, Type 2: Unilateral Bracket + Base Features: Easy to Install, Convenient, Bike Accessories Size: 15cm x 7.5cm/5.91" x 2.95" (Approx.) Approximate Size Of Frame + Base: 15cm x 14cm/5.91" x 5.51" (Approx.) Suitable for Bottle Diameter: 6cm-7cm/2.36"-2.76" (Approx.) Suitable for Round Pipe Diameter: 18mm-35mm/0.71"-1.38" (Approx.) Hole Distance: 6.5cm/2.56" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: Type 1: 1 x Bicycle Bottle Holder, 2 x Screw, 1 x Wrench Type 2: 1 x Bicycle Bottle Holder, 1 x Base, 2 x Screw, 1 x Wrench