RAM Fork Stem Mount with Short Double Socket Arm & Universal X-Grip® Cell/iPhone Cradle :
The RAM-B-176-A-UN7U consists of a fork stem base, short double socket arm and universal X-Grip® cradle. The included X-Grip® cradle has a clean and clever four leg design that sports great holding power without hiding your phone behind foam pads and plastic. The spring loaded X-Grip® cradle expands and contracts, allowing for a perfect custom fit of your cell phone.
Minimum Width = 1.875"
Maximum Width = 3.25"
Depth = 0.875"