This model is parametric and can be modified by importing the f3d-file into fusion, and then you can change the parameters such as arm-length, inner/outer hook-radius, body-thickness, arm-count (tested up to 8 arms with a center outer-diameter of 20mm)
Walls: 3-4
Bottom/Top-layers: 4
Layer-height: 0.2mm
Infill: Gyroid, 8-15% depending on your needs
Material: PETG for outdoor-use, PLA will be good enough for indoor-use
For the parameters used for the attached 3mf-file, please see the second screenshot
The author marked this model as their own original creation.