Manual Urban Arrow Family Hook
The Urban Arrow Family Hook can only be attached with the hook on the inside of the Cargo bin (see pictures on the product page).
You can attach the hook with a tie wrap on the bike. This is optional: the hook is firmly attached to the bike without the tie wrap, but it can easily be detached from the bike. If you want to prevent this, you can use the tie wrap.
Click here to see a demonstration of the hook being attached with the tie wrap to the Urban Arrow frame.