Drink holder attachment for Ultra Light Folding Chair

It is a drink holder to be attached to a Ultra light folding chair(Helinox type).

To assemble, several screws are needed.

M4 15mm x 1 and nut
1/4inchi screws 25mm x 1 and nut
M4 Thumb screw 20mm x 1 and nut
M4 Thumb screw 15mm x 1 and nut

There are two ways to use it.

Type 1.
You can attach a bar to the foot of the chair and attach a drink holder of CAPTAIN STAG.

For example this.
https://www.amazon.com/dp/B000BSCDMO

Type 2.
In combination with the Panhead, you can att