Review on Bessmate Waterproof Adhesive Sealant - Seamless and Oilproof by Daniel Shankle

If you intend to use these hooks on anything other than a window, do not buy them. I bought these hooks based on the fantastic reviews but I was very disappointed. I followed the instructions and waited 2 hours before attaching anything to it. According to the seller, they can hold up to 13 pounds each, so I hung a photo frame on one and a mini guitar on the other. Both items weighed less than 13 pounds. After a good hour of storing the items, the hooks suddenly collapsed and the picture frame smashed onto the floor. I had to throw it away. My mini guitar, "protected" in a case, was destroyed. I am very upset and lost valuable things because of these useless hooks. They don't rotate 180 degrees. However, they work well on Windows. :(