The hooks are quite strong I would give them 4 or 5 stars. I was even able to bend the hook to open it even further without slowing it down. But as others have said, the bolts are awful, you "can't" tighten them without removing the transverse groove. Also when I managed to remove a screw that I hadn't tightened (i.e. it was only lightly tightened) all the steps were worn down, now it was just a nail. It is obvious that the screws are rated "-0". So if you don't mind buying some extra quality screws (at an additional cost) the hooks are of pretty good quality. I found some screws on the Revain, #6 x 3/4", $100 for $7.32 (check the screw size you need at a major department store).
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