What it is? Basically a remix of "Gridfinity Cable Holder" By Matt Mellor. (https://www.printables.com/model/527719-gridfinity-cable-holder/files) Who was inspired by Pinecil Organizer by Zokol. Credit for original design concept goes to both of these designers.

Differences This version has screw and magnet holes at the bottom. (Ø6mm x 1.8mm for press fitting magnets)