The Mercer Donard 11kg Concrete Parasol Base - Black is a must have to hold your garden parasol in place. With its heavy weight it will secure parasols for safety during use. It can hold parasols with poles up to 38mm in diameter. It features a screw system for a tight fit to help ensure your parasol doesn't take off in a gust of wind. This is a sturdy and durable base that sits neatly under your garden dining table.