Under table double spool holder

All the spool holders nowadays are meant to be placed above the printer or on the table. I am using the Ikea Lack table for my printer...and the space below was wasted so I'm putting spools under the table instead of above.
This solution is better because pulling up the filament is better than pulling it down since there's less friction between the spool and the holder so it's easier for the stepper. (besides the more compact size of the whole thing)