These standoffs are used to add a 3D effect to your photos and artwork when mounted on the wall with acrylic. The “through-style” design eliminates the need for a frame by passing through the acrylic. Every standoff comes with one screw, wall anchor and 2 plastic washers to help prevent scratching of connecting surfaces, plus the standoff hardware itself. These standoffs have a very easy set-up and also allow you to change the mounted photo or artwork when the need arises.