To accommodate umbrella poles that are larger than 1.5" Diameter, Treasure Garden offers this optional aluminum stem that fits umbrella poles up to 2" Diameter. This stem simply attaches to your 50 lb Classic cast iron base to provide a solid foundation for your umbrella.
Model: BT2180 (for use only with 50 lb Classic Umbrella Bases)
Inside Diamter: 2"
Outside Diameter: 2.5"
ONE YEAR WARRANTY on Treasure Garden Umbrella Bases and Accessories.