The RAM-HOL-UN10-400U consists of the small Tough-Claw� base and universal X-Grip� cradle for large phones and phablets. The X-Grip� cradle has a clean and clever four leg design that sports great holding power without hiding your smart-phone behind foam pads and plastic. The X-Grip� cradle expands and contracts for perfect fit of most smart phones. This mount rotates 360 degrees. The X-Grip� includes a device tether recommended for outdoor applications. The cradle is compatible with handheld devices that will fit the dimensions listed below. It is important to verify the dimensions of your handheld device with a case/sleeve/skin when determining the overall size. Clamping Range (Rail/Tube Surfaces): 0.625" to 1.5" Clamping Range (Flat Surfaces): 0" to 1.14" X-Grip� Cradle Dimensions Minimum Width = 1.75" (Minimum Height = 5.5") Maximum Width = 4.5" (Minimum Height = 3.25") Depth = 0.875"