Features: This expanding Bicycles cup holder made by advanced material, lightweight and durable. Designed to fits most standard-sized water bottles, cups, beverage and cans. Available for being fixed onto handlebar, underseat, down tube, fork, front pipe.Great for road, mountain, touring bicycles. Easy to install: The clamp of this Stroller Bottle Holder designed for easy to installation and remove, no tool needed. Mounts in Seconds. Application: This Bike Beverage holder can be mounter vertically as well as horizontally. It fits for road, mountain, touring, most stroller, pushchair bicycles, motocycle, wheelchair, electric bicycles. Package Includes: 1x Motorcycle Bottle Holder or 1x Conversion Adapter Specifications: Material:ABS Outer Diameter: Upper - Fits 72 - 110 mm / 2.83" - 4.33" Lower - Fits 72 - 110 mm / 2.83" - 4.33"(can be adjusted) Suit for the tube diameter: 17-31mm/0.67''-1.22'' Type:Conversion Adapter,Black Tape,Yellow Tape(optional) note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.