How It Works
Attach-It relies on the stiff vertical plane that rests against the wall for its strength and stability. Gravity then holds the Attach-It firmly in the wall. Shelves hold less weight than pictures because the weight is pulling the Attach-It out of the wall as well as down.
To later remove the item from the wall, simply grasp the item firmly, keep the bottom of the picture or item close to the wall, and jiggle the item up and out of the wall.