Description: Adjustable bottle cage.It can fit various outdoor sports water bottle Design with mount,compatible with handlebar diameter:0.72"-1.2"(18mm-30mm) Ajusting the size by rotating the fixed screw with hand only or a hexagon screw tool Suitable for varied types of bikes,including mountain bike and folding bike Dimension: approx. 16.5 x 7.5 cm / 6.5 x 2.96 inch Color: blue black Package Includes: 1 x Bike Water Bottle Cage Holder