Comfortable and stable phone holder from ROCKBROS. Characteristics: built entirely of high-quality aluminum alloy width adjustment: 55 – 95 mm Adjustment of the range and pressure force using a convenient knob no risk of scratching the phone thanks to silicone protection 360-degree rotation possible fits handlebars with a diameter of: 22 – 31.8 mm weight: 130g Allen key included for convenient and quick assembly can be used on bicycle handlebars, as well as on some scooters and motorbikes