I've hung my heavy wooden ladders on these and they have stayed up so far but there is some bend on the hooks. I think they are perfect if you have more modern aluminium ladders but perhaps more sturdy hooks may be required for old fashioned wooden ladders. Perhaps I will be proven wrong and I will not return home to find they have fallen off.
Fantastic premise and plot lines. I really love the writing style but like many prolific authors the ending doesn't deliver. Overall if you have read any of Murakami's previous books you will not be disappointed. Not the best but still very worth reading.