This is a medium-duty cable hook for Olympia Carts.
Infill must be at least 30% or it will be too flimsy.
It is designed to attach at one of the top M6 bolts. (see picture) You will need to purchase an M6 bolt that is 5-10mm longer than the one currently on your cart.
It will work for both Standard and XL Olympia Carts. If you want to hang headphones from the hook, I suggest you get my XL Cart Hook.
The author hasn't provided the model origin yet.