This universal bracket is used to secure your solar module to either a flat surface or a pole with a maximum diameter of 60 mm the angle markings and bore holes for 8 angles make it easy to adjust your solar module to the best angle owing to the placed in borings the holder bracket can be used universally and is suitable for 1 or 2 module of the type sm10 for max 2 pieces sm30 for max 1 piece or sm45 for max 1 piece can also be used for one as 25 for max 1 piece if you drill addi