Screw design, ensure to grip handlebar firmly. What's more, there is a soft rubber under the screw belt, to avoids any scratch to your bicycle. Screw belt is long enough to fix on handlebar with diameter from 18mm to 35mm. Quick to detach and attach, phones can be taken off easily for calls and photo taking etc. 360 degrees rotating function, use your phone in landscape or vertical conveniently, nice for maps, navigation, recording or music when cycling. Open face design delivers complete access to all buttons and touched control of mobile phones. This bicycle phone mount can securely hold most mobile phones with screen size from 4in to 6.7in. Besides using on bicycle or motorcycle, with the phone holder you can also fix your phone on stroller, treadmill, shopping cart or any place as long as you have a round bar.