Double Spool Filament holder for Prusa MK3 MK4

If you have broken your original double filament spool holder. Here is a
solution for you. 
I couldn't find any easily mounted double spool for my Prusa MK3S+
printer. So designed my own modification. An upgraded 2 spools holder
made from 2 original MK4 spool holder but with holes for M5 screws and
M5nuts which will hold strong any of your spools. Print with 20 % infill .
Installs the same as original prusa knob.

Materials: 
x2 M5 nuts
x2 M5x25 any screw with flat head like DIN912;DIN7984; DIN7985 (in
example it's ISO7380)