Super strong plastic base is sand filled for weight and has a bright vacuum-metalized finish. This stand comes with an adapter sleeve to allow use with Poles of 1 in., 1-5/32 in., or 1-1/4 in. diameters. The larger your pole and flag, the more weight you'll need in your stand for stability. This base is shipped empty. It has a removable rubber plug to be filled with sand or BBs.