Description: Premium MaterialSolar Panel Mounting Brackets are made of aluminum alloy material, which is reliable in quality, sturdy and lightweight, making it easy to transport, handle and install.ApplicationRoof Panels Z Brackets are suitable for fixed installation of photovoltaic on the roof of RV and recreational vehicle, suitable for installing small, medium and large solar panels.FunctionSolar Panel Mounting Z Brackets can provide efficient, sturdy and flexible support solutions for solar power generation systems, ensuring that solar panels are in good working condition and fully utilizing their energy conversion efficiency.Please NoteSolar Panel Mounting Brackets are not recommended for panels over 150w. If used for panels above 150w, more sets of this Z bracket will be required per panel.Package List8x Solar Panel Mounting Z Brackets, 16x self drill cap screws and plastic retaining rings, 1x 8-10 open end wrench, 8x flat washers, 8x spring washers, 8x M6 hex screws, 8x M6 hex nuts Specification: Material: aluminum alloy Size Chart: 10cm/3.94inch Package Includes: 8x solar panel Z brackets16x self drill cap screws and plastic retaining rings1x 8-10 open end wrench8x flat spacers8x spring spacers8x M6 hex screw8x M6 hex nuts Note: Please allow slightly errors 1-2cm differences due to manual measurement.