Car back seat tablet mount

This is a remix from http://www.thingiverse.com/thing:1664384 - thank you Shaplov. And the hook origins from http://www.thingiverse.com/thing:128136 - thanks YoungBuck.

In order to get the tablet to stay in place I've added a top module that is to be connected to the bar module using an rubber band. The bar is snapped into place onto the left and right module.

I have also extended the bar length to 160mm (from 140mm) and created an additional 180mm wide bar.