The clips is adjustable:The max opening is 76mm,perfect fits for 4.8inches mobile phones. Easy installation: No need extra tools,just a few seconds to finish it. Safety: The device is highly compact with the steer wheel,can be moved freely, no security risk. Protection: The device is embedded with soft silicone pad, which protect your phone from scratch. Made of wearrnstallation.esistant and high tenacity ecofriendly material, can be used for a very long time(More than 3 years).The device won`t affect steering wheel cover installation .