This crank lift market umbrella features 7 1/2″ marine grade top, a 1/2″ coated aluminum center pole, and fiberglass ½″ diameter ribs. These market umbrellas feature our reinvented heavy gauge crank system and are the only crank market umbrellas with a two year commercial warranty. Our contract fiberglass umbrellas are made with commercial use in mind. Need hotel pool furniture for your project? Call our friendly staff to get a custom quote on outdoor hotel furniture from Park Tables.