Plastic frame with concrete inside for sturdy securing of your umbrella Dual rust-free steel post fits most furniture sets with 3 collars included to fit most umbrellas Built in wheels to conveniently reposition Umbrella Not Included. Sturdy and Versatile Umbrella Base The Member's Mark 60 lbs. Cement Umbrella Base is designed to keep your patio umbrella stable and secure. With its top tube and bottom tube assembly, it can accommodate umbrella poles with diameters of up to 1.88 in, 1.49 in, and 1.33 in. Simply switch the collar to fit the pole, ensuring a snug fit and enhanced stability. Two Height Options for Flexible Use This umbrella base offers two height options for your convenience. When used with a patio table, you can assemble the umbrella base at the lower height setting. This is achieved by attaching the correct collar, top tube, and concrete base. Once assembled, place the umbrella base under the patio table and insert your umbrella through the table and into the base. This setup ensures a secure and sturdy umbrella arrangement, providing you with shade and protection from the elements. Heavy-Duty Construction Constructed with a heavy-duty cement base, this umbrella stand weighs 60 lbs, providing a solid foundation for your patio umbrella. It is designed to withstand outdoor conditions, ensuring long-lasting performance and durability. Enjoy peace of mind knowing your umbrella will stay in place even in windy conditions with the Member's Mark 60 lbs. Cement Umbrella Base. Specifications Size: 16.92"L x 16.92"W x 19.8"H Adjustable Heights: 1.88in/4.8cm, 1.49in/3.8cm, and 1.33in/ 3.4cm (by switching collar) Weight : 60 lbs Warranty: 3 years on frame Additional Features: Equipped with wheels for convenient mobility. Offers two height options to cater to different situations.