[High Quality Material] The Z brackets are made of high quality aluminum. Therefore, they are foggy and durable, don’t bend easily, and perform well in hot, cold, or humid weather. The solar supports are very light and practical. The brackets are made of aluminum with a well finished edge (not sharp) and the aluminum does not rust. [Easy to install] There are pre-drilled holes in the surface and screws and washers provided can be used for easy installation to be used. Using our excellent performance organic silicon water, the effect is better. Easy to install and remove. Wide Application: The mounting hole reaches 2.4cm, which can meet various specifications of solar panels in the market, making solar panel installation easier on RVs, roofs, RVs, trailers, boats, yachts or anywhere else you need to install a simple case. All the parts you need to mount your panels to the wall are included with this product. The unique design is perfect for uneven surfaces. [LIGHTWEIGHT BUT DURABLE]