Please note: the clip diameter is F31.8mm (1.26 inch).Use a pair of sapcers(12*25.4),suitable for 31.8mm and 25.4mm handlebar bicycle.if the bar is too small,you need shop an adapter install in it. Fashionable & Simple ---The phone mount can fixed in a vertical or horizontal position,just Turn the cradle 90 degree roate.allow adjusting the display to the your best viewing angle, allowing safe hands-free phone access on the road.Convenient tool-free installation makes it easy mount to any Bicycle Handlebar, only need to locate and lock nut. Multiple Protections - Cushioning adhesive patch for clamp can reduce vibration as well as avoid phone surface scratches. Adjustable settings ---provides superb Universal Compatibility, fit for any phones/GPS of width between 2.17"-3.94", Compatible with iPhone XR/ XS/ XS MAX / Plus ,Compatible with Samsung Galaxy S7/S6/S5/ S4/ S3, Compatible with Google Nexus 5 4(3.5in-6.2in ) cellphones and GPS. Super Durable & Stable --- All aluminium alloy frame makes it the strongest and most secure phone mount on the market. The Four Edges are designed with Eagle Claws,which make your mobile phone to be much better protected. The cross-shaped structure makes it fit the pedestal perfectly.