0°-90° adjustable angle to maximize solar energy collection.. Easy to install with pre-drilled holes.. Mountable on any flat surface, especially suitable for roofs.. Specifically designed to work with the EcoFlow 400W Rigid Solar Panel.. Recommended Tools (Not Provided):. Adjustable wrench (M8 and M12). Tape measure. Safety glasses. Work gloves. *This bracket should be installed, adjusted, and repaired only by professionals and qualified electrical maintenance personnel familiar with installing and operating solar panels.0°-90° adjustable angle to maximize solar energy collection.. Easy to install with pre-drilled holes.. Mountable on any flat surface, especially suitable for roofs.. Specifically designed to work with the EcoFlow 400W Rigid Solar Panel.. Recommended Tools (Not Provided):. Adjustable wrench (M8 and M12). Tape measure. Safety glasses. Work gloves. *This bracket should be installed, adjusted, and repaired only by professionals and qualified electrical maintenance personnel familiar with installing and operating solar panels.