Small brass-plated nails are included with the purchase of every wall hanging. For further stability the picture hangers I recommend are made by Floreat. If you haven’t heard of picture hangers, they are hooks specifically designed to be used in drywall used by many art galleries because of their strength (they are installed at a downward angle, thus distributing weight against the wall) and because they leave only the smallest hole when removed. Click here to read a great article that covers how they work and how different brands compare! Please note that due to varying qualities of drywall you must determine for yourself if a picture hanger or provided nail is the right choice.