Features: Make of aluminum Alloys with anodic oxidation treatments on the surfaces, strong corrosion resistance and easy installation. Used to connect the solar panel and fixing it on the rail, make sure the component is installed in the correct position and direction. Easy to install, with pre-drilled holes, using included bolt accessories for quick and efficient setups. Z shape designs, is suitable for uneven surfaces, and the grooves strips making it firmly connect to perfectly support most solar panel. Specifically designs for mounting solar panel on rooftops, boats, wall, garages, and outdoor structures. Specifications: Materials: Aluminum Alloys Height: 30mm (1.18inch)/35mm (1.38inch)/40mm (1.57inch)/45mm (1.77inch) Package Includes: 8Pcs End Clamp 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.