New 360 Degree Rotatable Bicycle Bike Phone Holder Handlebar Clip Stand Mount Bracket For iPhone Samsung Cellphone GPS MP4 MP5Description: Double clamps with silicone mats to hold your phones or other devices and protect your devices. Can hold phones， GPS， MP4 and other devices， the width of which can be up to 6.3 inch . Makes your phone or other devices stay close to your hands and easy to get it when driving. An adjustable clamp design on the pedestal， convenient installation onto different bikes. (Supports those handlebars， the diameters of which are between 15mm and 30 mm.)