I should have read the reviews on this place more carefully. I can't find anywhere on the list that it's plastic. Plastic has some advantages, but I was expecting metal. Since using it for a few days I've loved the light weight, good visibility and it's strong enough to last as long as aluminum and this one won't rust or corrode. After using it for a few days, it still remains boxy with my square steel frame. If I ever need to replace it I will buy another one of these.