Solar Panel Mounting Brackets: These brackets are specially designed to support solar panels for on-grid and off-grid installations. Materials: Made of aluminum, lightweight, durable and anti-corrosion. Installation: With Nuts and bolts to attach the system to the installation surface, making installation easy, inexpensive and quick. Application: Ideal for RV Rooftop, Boat, Cabin, Home and many other applications to complete installation to support individual solar modules. Perfect for irregular surfaces. Package includes: 4 solar panel brackets, 8 self-drilling screws, 4 short hex screws, 4 spring washers, 4 nuts and 4 flat washers.