The solar module holder is suitable for all solar modules of various sizes. The brackets can be attached to all the solar modules with aluminum frames, as no connecting rails are required to attach the brackets to the solar modules. To install the brackets, using the screws and nuts provided, you can easily and securely screw the brackets into the existing mounting holes on the solar module.Another great advantage of the solar module holder is the four attachments, two of which are adjustable in length. This gives you the to place the solar modules flexibly and adjust the of attack. This allows you to adjust the to the perfectly and individually for each .Brackets are best for mounting solar modules on exterior walls or flat roofs. However, these can also be mounted on any solid surface.color:SilverMaterial:aluminum alloyPackage Contents:4 sets x solar panel bracketsOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.