Screw adjusting knob, Fits different water bottle diameters- 60-85mm
Made by high quality materials and components- Aluminum alloy+PE
Lightweight and durable design:can effectively reduce the weight for long-distance travelers
Bottle cage has arms that wrap around the bottle, sturdy enough to hold a full bottle firmly while riding
Easily attach to any bike frame that has predrilled holes, if your bike no holes, you can go to repair shop to drill holes