I used these to make a wall mount for my garden tools in my Rubbermaid plastic shed in the backyard. I mounted them on a wooden board. As you can see in the picture they are holding some heavy shovels and doing their job 100%. They definitely have some clamping power, so if you're considering a project like this, it's going to take almost everything. They haven't slipped since they were installed. Will definitely use more for garage projects