This galvanized steel plate freestanding umbrella base is designed to provide long-term strength and stability for your umbrella. With a 36" diameter and 150 lbs. of weight, your umbrella will remain securely in place under normal use. This umbrella base also features a galvanized coating that guards against rust or corrosion for further protection and can also be easily upgraded with an additional three steel plates for extra reinforcement. With a 1.5" stem designed to easily accommodate any standard commercial umbrella, or a 2" stem upgrade at no extra cost, this product is made for ease and convenience. Plus, the base also comes with a 1-year commercial warranty and is made in the USA.