Suitable for bicycle frame and handlebar motorcycle cup holder with 360° rotatable bracket 2-piece bicycle bottle cage plastic Adjustable Size: 55-75mm: Bicycle Bottle Cage - Minimum bottle diameter is 55mm, maximum is 75mm. The adjustment knob on the bottom easily adjusts the front and rear width of the bottle cage to accommodate bottles of varying diameters. Wide Compatibility: This bicycle cup holder can be mounted on most bicycles, including mountain bikes, road bikes, folding bikes, and electric bikes. It is also suitable for motorcycles, scooters, road bikes, mountain bikes, ATVs, UTVs, wheelchairs, strollers, exercise bikes, treadmills, and more. High-Quality Materials: The bicycle bottle cage is made of high-quality nylon plastic, which is stronger, more impact-resistant, and lighter than other materials. The holder has a strong grip and won't bounce or fall on uneven surfaces. Easy Installation: This bicycle bottle cage is very easy to install. No drilling is required. The included mounting kit allows for quick installation or removal. The entire process is quick and easy, with no additional tools required. 360-Degree Rotation: The bottle cage features a 360-degree rotating design, allowing it to be mounted horizontally on the handlebars or vertically on the bicycle frame. Rotate to adjust the stand position for a comfortable use experience