Designed for devices 1.75 to 4.5' wide, the Tough-Claw Mount with X-Grip Cradle for Large Smartphones from RAM Mounts consists of a Tough-Claw rail clamp base and a spring-loaded X-Grip cradle for large devices. The X-Grip cradle has rubber-tipped arms that expand and contract, helping to ensure a custom fit for your phone. The Tough-Claw rail clamp base allows for toolless installation and removal on round, square, and oddly shaped rails and bars with an outer diameter ranging from 0.625 - 1.5' or flat surfaces up to 1.14' thick. The mount is made from composite and rustproof stainless steel and rotates 360°, enabling you to use your device in portrait or landscape mode. A Tether is included for additional security.