External spool holder

I designed this spool holder so that it does not fall when the printer pulls the filament, 4 ball bearings of 22 mm diameter are needed, I created some V-shaped guides to apply to the bearings simply by interlocking them, The side pieces are higher in so as to have double security. I'm working on a stand to hold the two pieces in place... If you like the idea, print it and tell me what you think!edit:If you want a stand, here it is:Boost Megrazie!https://makerworld.com/en/models/775491#profi