Lixada Water Bottle Cages Extra Lightweight Carbon Fiber Bicycle Bike MTB Water Bottle Holder Cages Brackets ULTRA-LIGHT: 100% full carbon fiber, superlight design, incredible strong and lightweight (only 1.27oz/36g), zero burden for your trips. FITS MOST BIKES: Easily attach to any bike frame that has predrilled holes, if your bike no holes, you can go to repair shop to drill holes. FITS MOST WATER BOTTLES: This water bottle holder is made to fit any water bottle with standard size and the cage can be bent open or closed to change the tension on the bottle. FIRMLY HOLD THE BOTTLE: The water bottle cage has arms that wrap around the bottle for a secure and firm hold so you don't have to worry about it falling out during your ride. EASY INSTALLATION: Built-in double bolts, ensure you easy installation and create a very stable holder.