This is a filament clip for, well, your filament (and wires).
If you have filament lines or wires all over your printer, this will help keep them to the side and away from the plate. The wire clip holds roughly 3.9-4mm thick wires (4mm is a bit tight). And the filament clip holds 1.75mm thick filament lines. The clips are also very light, each weighing less than a gram.
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God bless!
The author marked this model as their own original creation.