This is the Quick Corner Caddy TM system. It includes a 8" natural stone shelf made of white marble, mounting bracket, glue, sandpaper, wipes, and instructions all in a beautiful package. With this system you can easily mount a natural stone corner shelf in a shower that is already tiled. It is the best alternative to the aftermarket metal shower corner shelf system that will rust or corrode. Please select the quantity you want. If you want it polished on the underside select that option. If you would like priority shipping please select that.