Provide a sturdy foundation for your portable banner with this water tank base! This sturdy and wide anchor is made of plastic and steel and is designed to fit poles that have an interior diameter greater than 16mm (0.63"). It measures 18" x 18" x 12" and is perfect for both indoor and outdoor use to spice up tradeshow displays, sidewalk advertisements, fundraisers, awareness events and more. It is built to withstand outdoor conditions when filled with water or sand. Minimum assembly is required with no extra tools needed. This is a great option for all half drops and teardrops, razor, fin, blade or other portable banner styles that utilize all sizes of hardware.