Mounts most any iPhone (in case) in landscape orientation. Accepts a countersunk screw, or generic quick release with 2" x 1.7" wedge base. Add rubber band or O-ring to complete. Also add rubber layer (foam tape, rubber feet, ...) inside clamp to give friction increasing holding power. Version 2 changes: Relaxed dimensions between parts for better fit with out having to sand, modified so it will clamp down on iPhone 5 without a case, enlarged mounting hole for correct screw size and made a square bottom hole.Use a rubber band or large O-Ring over lugs to clamp phone in the holder. Also add rubber layer (foam tape, rubber feet, ...) inside clamp to give friction increasing holding power. Version 2 changes: Relaxed dimensions between parts for better fit with out having to sand, modified so it will clamp down on iPhone 5 without a case. Source CAD files (Inventor 2015) are supplied if you wish to modify.