The length adjuster is compatible with most mobile phone GPS, you can adjust the width from 50mm to 100mm to fit the phone. The sturdy aluminum alloy material and the sponge, the sturdy metal phone holder can fix your phone on the bicycle, and the sponge can also protect your phone. New design-will not block the screen, almost suitable for all large-screen mobile phones. For example, iphone x / Xr / xs, Huawei Mate 20 pro, Samsung s8 Note9 full screen or 360 degree rotated full screen phone-you can rotate the viewing angle without uninstalling. Widely used-can be installed on Φ31.8/25.4/22.2 handlebars. Can be used for motorcycles/mountain bikes/road bikes/electric bikes/folding bikes/scooters, etc.