Made of stainless steel components and high-strength composite for durability and reliability in the most demanding environmentsSpring-loaded 'X' design with rubber caps sports great holding power without hiding your phone includes optional device tether for peace of mind during rugged useRAM® X-Grip® is connected to the RAM® EZ-On/Off™ bicycle base, featuring zip ties for attachment to a variety of handlebar diametersRAM® X-Grip® fits phones ranging from 1.87'' to 3.25'' in width and keeps your device completely functional and accessibleAdjust the zip ties for attachment to a variety of rails, from a minimum of .5'' in diameter