I’m writing this so that another person doesn’t go through what I did. This is a really unsafe product. I have an 11 foot cantilever umbrella so I got the biggest base possible. (The 330 lb base) First of all, the screws that attach the umbrella to the base our extremely small. In fact, the screw holes are small, definitely not thick enough to safely secure the umbrella. The screws that are supplied to the base are thicker and don’t fit the base. The one I received does not look like the one in the picture. The one in the picture looked like the umbrella attaches to the crossbar. The one that I received the umbrella attaches to a hard plastic plate on top.