Set up this free-standing umbrella base on your patio or at any outdoor event without worry. The US Weight 80 lbs. Free Standing Umbrella Base is crafted with a high-density polyethylene shell with UV protection that will not dent, or fade, and can withstand the elements in any weather climate. This heavy and stable base was prefilled with 80 lbs. of high-strength concrete. Easily transport and setup the base with the removable wheel on bottom and hand grips for easier mobility. The 20.5 in. Dia base features a 14 in. high stem that accommodates poles from 11/2 in. through 2 in. thick. Inside the stem is a plastic post protector for the umbrella to rest on instead of a screw leaving the pole undamaged. The stem features 2 knobs made of polypropylene that tighten the umbrella securely in place for added stability and support. All of the steel components are made of grade 304 stainless steel. Grade 304 stainless steel is also used in aerospace engineering and surgical instruments.. Assembly Required: Yes. Color Family: White. Color/Finish: White. Finish: White. Included: Hardware Included. Material: Concrete. Patio Furniture Features: UV Protected,Weather Resistant. Product Weight (lb.): 80 lb. Returnable: 90-Day. Assembled Depth (in.): 20.5 in. Assembled Height (in.): 14.375 in. Assembled Width (in.): 20.5 in. Compatible Umbrella Pole Diameter (in.): 2. Material: Concrete. Patio Furniture Features: Weather Resistant. Patio Furniture Features: UV Protected. Included: Hardware Included. Assembled Depth (in.): 20.5 in. Finish: White