Audi versatile screen holder

These are versatile holders, adapted to my car (Audi Q7), which has square headrest bars and not the usual small round ones (see pictures)

Per seat, you'll need:

• 1 back (facing the back seats)
• 1 front (facing the front seats)
• 1 holder
• 2 M6x35 flat head hex bolt (something like this)
• 2 M6 nut

There are currently the following holders:

• RAM : adapts to RAM mount system, by providing a 1in sphere. Can be used with any RAM like adapter 
• ipad : works well with my 11in iPad pro

Planned, but not done yet are:

• quadlock adapter
• go pro mount

I've printed everything out of PETG, limited post-processing (just use a 6mm drill on the holes and removed support). When printing, I tend to emphasize on sturdy and reliable, not fast print, so you can probably shave a fair amount of time by using different tradeoffs

notes: 

• all_print contains my base profilewith everything on the build plate (will give you orientation and such, just hide whatever you don't need before slicing)
• this is a “from scratch” design in Fusion360, I can happily share link to model