Convenient Tool: Easy to install and adjust, a good assistant for outdoor riding and long distance cycling. Easy to Use: Only simple installation needed to use the mount adapter, simple and clear design is user friendly. Adjustable Angle: The angle of the bottle holder adapter can be adjusted at will, which is convenient to change the angle during use, and makes it easy to travel. Suitable Range: Suitabel for these pipes with a diameter of 31.8mm/1.3in, 25.4mm/1.0in and 22.2mm/0.9in, not for a specific range. Aluminum Material: Made of aluminum alloy with CNC machining for surface, high rust resistance and durability. Feature: 1. Aluminum Material: Made of aluminum alloy with CNC machining for surface, high rust resistance and durability. 2. Adjustable Angle: The angle of the bottle holder adapter can be adjusted at will, which is convenient to change the angle during use, and makes it easy to travel. 3. Easy to Use: Only simple installation needed to use the mount adapter, simple and clear design is user friendly. 4. Convenient Tool: Easy to install and adjust, a good assistant for outdoor riding and long distance cycling. 5. Suitable Range: Suitabel for these pipes with a diameter of 31.8mm/1.3in, 25.4mm/1.0in and 22.2mm/0.9in, not for a specific range. Specification: Item Type: Bicycle Bottle Holder Adapter Material: Aluminum Alloy Application: For Outdoor Riding, Long Distance Cycling Applicable Pipe Diameter: 31.8mm/1.3in; 25.4mm/1.0in; 22.2mm/0.9in Weight: Approx.73g/2.6oz Package List: 2 x Plastic Washer 2 x Metal Gasket 3 x Screw 2 x Wrench 2 x Mount Adapter Accessories