A strong hook for bolting to a rope

I have made the hook instead of a broken one, tried, can lift at least 65kg, when I will create comething better, I will try to break this one. Not this time…

Printed in PETG, for m5 bolt, no supports. If it does not open wide, just heat a bit the thin part and widen it a bit.

the 2nd version is which I used, the 1st version didn't fit my trainer, but it is much stronger.