So I needed to make a sanding block and wanted to avoid wrapping sandpaper around a block of wood. I had a nice block of Elm and cut it to size for hook and loop sandpaper. I used these self adhesive hook pads on the Elm block and simply applied the sandpaper.......a brilliant solution. It means I can start with a coarse grit and run through the grits to very fine (80 to 400) and change paper in about 2 seconds. I have used the block many many times and the pads have stayed in place and held the sandpaper perfectly. This is just one of hundreds of uses for these pads. Highly recommended.