This is a replacement for the base mounting bracket for my Ring solar panel (used to power my Ring video camera). The original broke under the weight of heavy/wet snow on the panel, so this was redesigned with a thicker mounting plate and more support for the cylindrical portion of the bracket. It attaches to the original smaller mount that slides into a small slot on the back of the solar panel and also uses the original M4 screw and nut to tighten/adjust the angle of the panel.