Review on ⚡️ Solar Panel Mounting Brackets - Houseables Roof Panels Z Bracket, 2.5” x 1.5” x 3.9”, 4 Sets (16 Pc), Aluminum, Off Grid, Adjustable Mount Nuts & Bolts - Ideal for Solar Power, Boats, Wind Generators, RVs, Trailers by Chase Shetler

I've only had this installed and installed for a few weeks so I can't confirm its longevity. They seem to be sufficient. They are aluminum and can be bent easily, but I have no doubt they will hold up well enough. I have 350w panels so their holes didn't line up with my panels. I had to drill new holes in the panels. This is not a manufacturer error, just a piece of information for those who will be using it on larger panels than they are designed for.