The hooks seem sturdy and well-made. However, there aren't any instructions on the case or included in the case about how to anchor them. It doesn't come with a drill bit to drill a guide hole for the anchor or tell you what size drill bit to use. You are left to guess what to do. Also, one of the pictures shows a drill bit attachment you can use to screw in the hooks if you can screw them directly into wood. However, the attachment isn't included, and the case doesn't mention it. The manufacturer leaves it up to you to figure it all out. It seems like it would have been simple enough to include a few instructions on the case, but to keep costs low, they decided not to.