The Mobile Phone Clamp with Plain Jaw from Really Right Stuff fits smartphones ranging from 2.2 to 3.4' wide. Engineered for a secure grip, it helps ensure your smartphones remains steady during your outdoor explorations and photography sessions, thanks to inward-angled rubber jaws that keep your phone in place and protect it from scratches. An included hex key may be used to adjust the sliding jaw to fit your phone, then use the knob to lock your phone into place. There are also two 1/4'-20 mounting sockets that can be used to connect a pocket stand, tripod, or other common mount. You can also attach a 1.5 quick-release dovetail or Snap QR for added convenience when mounting your phone.