Features: Allows for easy and flexible installation on flat sheet metal roofs.With a Tilts angle ranges of 10-60°, this mounting system is suitable for both commercial and private solar systems. The adjustable Tilts angle of the solar panel brackets ensures that your panel is positioned at the ideal angle to maximizes sunlight exposure and increase energy production. Our practical design features a central screw for fixing the angle of the solar panel mount. Make of aluminum Alloys, ensuring durability and resistance to harsh weather conditions. Perfect for various applications such as boats, garages, caravans, marine, flat roofs, wall, floor, and motorhomes. Specifications: Materials: Aluminum Alloys Quantity: 2set/4set Screw length: about 80mm/3.15inch Other detail as shown size in the picture Package Includes: 2/4set Solar Panel Mounting Bracket note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.