This expanding Bicycle cup holder made by advanced plastic steel and metal parts, and durable. This water bottle cages holder is 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, hybrid, touring bicycles. Easy to install: The clamp of this Baby Stroller Bottle Holder is 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. Material: metal,nylon colour: black Package Contents: 2 x Bicycle Water Bottle Cage Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.