Secure and SturdyThe water bottle cage is suitable for bikes with predrilled screws holes if the package received is missing screws please contact us The water bottle cages has arms that wrap around the bottle for a secure and firm hold so you dont have to worry about it falling out during you ride on bumpy trails Make sure a full water bottle is securely fastened while riding Wearresistant QualityThe bike water bottle holder made of high quality PC material ultralight only 35g will not attrit the bicycle frame and easy to install Great for road mountain hybrid touring and electric bicycles Easy to InstallWith nocharge installation tool and two pairs of screws Even if your kids go to Install It takes less than 60 seconds to install these bicycle water bottle holder Use an 3mm Allen wrench to secure the stainless steel bolts to the bike rack IMPORTANT Check if your bike frame has threaded holes before you buy Universal FitThis lightweight water bottle holder is designed to fit most sized of cycling water bottles Specifically designed for a cyclist it allows you to access your water bottle while riding easy access at all times NOTE if you receive your shipment and are missing bicycle bottle pocket accessories please inform us and we will follow up closely Colorful Design Has a nice finish that doesnt scratch or mark the bottle Perfect color match to your frame It is more safer and flexible not only suit for standard size bike water bottles likes 20 21 ounce size but also the disposable water bottles or coke