V-Slot cover for Creality Printers but this fits on others as well.
The Lenght can be adjusted in the Slicer. Just unselect Uniform Scaling
Filament: PETG, ABS, ASA
Layerheight: 0.12-0.15mm
Walls: 1.2mm
Infill: 10%
The author hasn't provided the model origin yet.