Shockproof ProtectionThe four corners and surface of the bicycle mobile phone holder are matched with thick silicone resin, which provides your mobile phone with all-round protection to prevent scratches or slipping. Even in emergency braking, bumpy road or sharp curve, the motorcycle phone holder and handlebar are firmly connected and will not come loose while cycling. Fixed Clamp with Quick ReleaseInstallation faster than traditional types and no Tools required! The 15-40mm handlebar adjustment range is widely used for motorcycles, motorbikes, bicycles, strollers, treadmills, scooters and wheelchairs. One-handed operationThe motorcycle smartphone holder adopts the automatic retraction design, simple Operation. Wide Compatibility The universal bicycle cell phone holder is compatible with 4.7-6.8 inch GPS devices Safety lock Press the switch on the back to Fix your phone. The locking mechanism provides security on uneven terrain. It offers you maximum support and full protection.