Heavy duty. I ordered 2 for two umbrellas in the same area. Looks identical to picture. Box was beat up like it was dropped from an airplane but the item looks undamaged and in good shape with the exception of a very light scratch on the top area where the piece gets connected to the base. Otherwise, it looks like cast iron and is exactly what we wanted!  The tube with the two knobs can be separated if you want a shorter tube.