Those are tiny clips to be printed with different text and/or color to apply do (power) cables to more easily identify them.

The specific examples in the STL file are just examples. You may want to create versions with your customized markings with the OpenSCAD file cableclip.scad from https://github.com/schiele/3dmodels

The fancy part of this model is not the trivial clips by themselves but the OpenSCAD module in surfacecylinder.scad that allows to map any 2D object (including text) to a cylinder surface.

For printing, I recommend using a material with a certain level of flexibility, like PETG, otherwise, they likely will break on attempts to put them on the cables.