It seems sturdy overall. Good size, ok metal. O my issue I came across with mine was two holes for the brackets that hold the roof supports didn’t have anything for the bolts to screw into, just the holes in the bars. No threading. I don’t know if this was just a defect in this specific set or a design error overall. Once together and tightened, it doesn’t seem that it will be a big deal since the top seems sturdy enough.