I got this base to use with my 9' umbrella free standing.  The weight should be OK.  The riser pole even when tightened does not stay firm and causes the umbrella to lean a few degrees.  Used with a table might help this but if you plan to use with free standing umbrella be prepared for an umbrella,that leans about 5-10 degrees.  needs a little design work.  It will work but is not the best.