This ceiling hook is designed to attach to the roof, specifically for hanging handles or rods up to 40mm in diameter. Ideal for use in the garage, it can hold various tools, providing a secure and accessible hanging solution to keep your space organized and clutter-free.

I printed in PETG, works well.

update:
I have added a second version of the hook, with a small amount of reinforcement, and a  larger lip on the end.
Was encountering some problems with flexing and slippage.
Holding up well with high infill.