Before purchasing, you need to check your umbrella pole diameter and look that the center to center distance between the threaded mounting bolt holes. When I went to move our umbrella over, we found two issues.

1) the hole for the umbrella pole was 2 3/8, our pole is 2 9/16's.

2) we need to use the inner set of bolt holes, ie 5 1/4 spacing, not the 6 1/4, not sure if the thread insets are movable.