Beach umbrella,aluminum outdoor umbrella Waterproof and UV treament 2.7m/3m hanging umbrella,pole:Dia38mm,6/8ribs outdoor sun umbrella,aluminum sun umbrella/parasol:side pole ... density, colorfast; Frame: shaft + ribs ( aluminium fame or wooden frame) Diameter of round shaft: φ38, φ48, φ55; Rib: 6 ribs, ... with good services.Item Guarantee Life: One year. outdoor sun umbrella,aluminum outdoor umbrella