I was thrilled find this gadget! What a clever way to organized lids versus the plop into a bowl or precariously stack methods or organization. They arrived timely and wer packaged fine. And they appear sturdy enough.The drawbacks:* While the adhesive sticker is 3M, I question that. I went to sticker route because I didn't want to drill into the shelf to install these, as I wanted them suspended from the upper shelf. I washed and dried the shelf well. The surface wasn't damp, didn't have any type of film on it, and the adhesive was clean and felt sticky. I removed the adhesive cover, placed it under the shelf, and pressed it into place. I let it hang there for the rest of the afternoon before sliding my lids on. I put 3 on one, 2 on the other (all Yeti, all.of the same size) and wouldn't you know both of these hangers fell. I released the surface (maybe I missed a spot?) dried it well, and rehung. They fell again. So, plan B. I get the little hardware packet.* The screws are flat head phillips screws that are one inch long. My shelf is not one inch thick. These would pop clean out the top.of the shelf. I have 1/2" screws I can use but again, I didn't want to drill into the shelf. There are drywall anchors in the hardware packet so I am getting the impression these are supposed to me mounted into a wall? (And no, there are no instructions. And yes, I would.have read them if there were. Because I love font size 2 reading materials.)So, I will had double sided adhesive sticky pads to the list so I can use these as I planned to. Because I am not putting holes in my cabinet shelves.Would I buy these again? The nonsense with the adhesive has me annoyed at the moment.