Promaster Flexible Phone Clamp 2929
Connects a phone to most hot or cold shoes with a flexible gooseneck for easy positioning.
The Flexible Phone Holder makes it easy to attach your phone to most hot or cold shoes and position the screen just about any way you like it. A 4" gooseneck lets you bend, twist, and position the phone for the best view. A licking wheel at the cold foot keeps a secure hold against the hot or cold shoe you mount it to.
With a maximum opening of 3.75" the phone holder will accommodate most phones, even large models, with a protective case installed.