RamMount - X-Grip Large Phone Mount with Low-Profile Tough-Claw-RAM-HOL-UN10-400-2ULow profile phone mount clamps to your handlebar with the turn of a single knob. Small version of the RAM Tough Claw base is designed to quickly clamp to round, square, and odd shaped rails and bars ranging from . 625" to 1. 5" in outer diameter; rubber pads provide stable gripping and protection of mounting surface. Spring loaded 'X' design for large phones with rubber caps sports great holding power without hiding your phone; includes optional