Low 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 1.14" 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 device tether for peace of mind during rugged use; check compatibility section below to see if your phone will fit Made of high-strength composite and stainless steel hardware for durability and reliability in the most demanding environments Backed by a lifetime warranty