Material: Made of High Strength Aluminum Alloy Material. Durable and Lightweight. Can Effectively Reduce The Burden of Long-Distance Drivers. Weight: 40G Each. Stable Structure: The Bottle Holder Has Arms. That Enclose The Bottle and Hold It Securely. So You Don'T Have To Worry. That It Falls Out While Driving. for Drinking Bottles With A Diameter of 72Mm (2.81 Inches) (With A Little Effort, The Holder Is Easily Adjusted To The Size / Diameter of The Water Bottle). The Bracket Is Suitable for Various Types of Bicycles. Incl. Racing Bike. Mountain Bike and Folding Bike. It Is Also An Ideal Companion for Weekend Trips or Daily Training. Bottle Cage Adjustable Water Bottle Cage Bicycle Cup Holder Holder.Size: Approx. 14 X 7.2 X 7.2 Cm/5.46X5.46X2.81 Inches.