It’s definitely not worth the price! The size of the hole does not fit the traditional pole sizes that are sold on the site. In order for the umbrella to fit we had to remove the rubber.

I have been looking for this shape everywhere and it fits perfectly under our outdoor table!

The clamp is assembled with a screw, washer and lock nut that fits under the base. The assembly protrudes about a 1/4 inch from the bottom in the center of the base. Meaning to mount this on a deck or table, you'll have to drill a good size hole so that it will lay flush. What were they thinking? I wanted this to work, but it's going back.

There is a bolt head on the bottom of the plate which makes mounting this nearly impossible without some washers and/or modifications.

screwed it to my deck and works great.