Exactly what we were looking for to help ensure our 9’ umbrella stays on the deck.  It’s dirty now, but arrived in good condition.  I’d subtract 12 star because there were no instructions and you do have to put it together.  Also, the description claimed the «wheel » is retractable, but it’s not.  We subtracted another 12 star because sometimes it moves on its own.   Hope we continue to be pleased with our purchase.