Item Type: Solar Panel Mounting Bracket_x005F_x000D_Material: Aluminum alloy_x005F_x000D_Guide Rail Length: Approx. 400mm / 16in 1Description of Function: These solar panel bracket set is designed to attach the panels to the rails and make connections between the panels. 2Rail Length: The mini rail has a length of 400mm(16in) and is compatible with many types of solar panels and is suitable for all types of roofs with color steel tiles, brick and asphalt shingles. 3Aluminum Alloy Material: The solar panel mounting bracket is made of aluminum alloy with anodized finish, high corrosion resisting performance and high strength. 4Easy to Install: This solar panel bracket set can be firmly connected to the solar panel. Easy to install, save time and effort. You just need to install it in the target location. 5Wide Application: The solar panel mounting bracket set is suitable for RVs, houses and boats, etc. It has high tenacity and can withstand harsh weather conditions. 4 x Guide Rail 16 x Sticker 16 x Screw 4 x Press Block Manual measurement may have error. Please make sure you don't mind before ordering.