Fully protect your mobile phone: This bike holder is made of high quality alloy, which is much more durable and stable than plastic. The clamping knob on the holder can tighten your phone well and protect it from accident and loss. You don't have to worry about your phone falling when you are on a bumpy road. 360 Degree Rotatable: The bike phone holder supports the vertical or horizontal view, and you can select the best angle to reach your phone at any time, if you use your smartphone as GPS or use bike apps for your bike rides. Universal Bicycle Holder - The length of the metal phone holder can be extended from 50mm to 100mm. It fits phones from 3.5 - 6.5 inches and fits all devices that are 2.0 - 3.9 inches wide and less than 0.43 inches thick. It can be used for all handlebars with a diameter from 24mm to 38mm. Easy to Install and Versatile: With the included Allen wrench, the bike mount can be easily and securely attached to your mountain bike. You just need to locate and tighten the nut. We choose the most suitable and strongest clamp to ensure full access to your phone's user interface. Barrier-free microphone, fingerprint detection, comfortable listening to music, navigation and answering machine while cycling.