I designed this to hold my Note 3 (that's in an Otter Box) on my dash board, clipped on the edge over the sync display. The base parts should work well with a lot of different items, like GPS, dash cams, etc, by trading out the cross bar and/or the phone clips.Right now, this is printed in PLA, it's winter. I will probably reprint in PET once the seasons start changing. The screw that secures the center post is designed to be an M3, with a nut embedded on the inside of the cylinder wall. The cross bracket is secured with #6 machine screw and nut. The base ring is meant to be glued to the main clip. I used gorilla glue. In in some cases, light, non-permanent adhesive might be used in case the clip is not fixed firm enough.