Features: Made of high grade stainless steel, after shot blasting surfaces treatments, not easy to be oxidized, delaying the metal corrosion rate. Easy installation: Can be installed from any position of the aluminium alloy extrusion guide rail, flexible installation, bolt connection, no need to drill and welding, fast and time-saving. It can meet the needs of different roof structures. Suitable for all kinds of universal framed solar panel on the market to install on various types of roofs. The hooks are of the roof for the installation of aluminium rails, profile rails, mounting rails for mounting Photovoltaic modules or solar energy systems. Suitable for installing the solar photovoltaic module bracket on various tile surfaces and steel tile roof. Specifications: Material:Stainless Steel Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Solar Roof Hook