Description：Material: The water bottle cage made of aluminum alloy, durable, lightweight, will not attrit the bicycle frame and easy to install.General: Great for road, mountain, hybrid, touring and electric bicycles.Easy to Install: Including necessary mounting fittings, the screws are standard size for water bottle mounts to most of bikes with drilled holes, and washers are suggested for tight fixing.Design :The water bottle holder 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.Color: There are 6 colors to choose from, more suitable for your bicycle.Specification:Product name:bicycle bottle cageColor: black, red, blue, orange, green, purpleMaterial: Aluminum alloySize: (L*W)about15*8cm/5.91*3.15inchPackage Includes:1pc*bicycle bottle cage2pcs*Screw2pcs*Screw washer1pc*Hexagon socketNote:1. Due to the light and screen difference, the item's color may be slightly different from the pictures.2. Please allow 0.5-2 cm differences due to manual measurement.