WATER OR SAND FILLING: Base can be weighed down with up to 55 pounds of sand or 19 liters of water, or empty it out for a lightweight stand that can be taken anywhere DURABLE, HIGH-QUALITY MATERIAL: Made of rugged, durable HDPE plastic for realistic appeal that lasts for years to come, and includes a solid steel pole tube to place your umbrella inside HOLDS VARIOUS UMBRELLA SIZES: Versatile base features a steel pipe that accommodates all market umbrellas; ideal for holding most 6-10' umbrellas with 1.5-1.9" pole diameters ADJUSTABLE KNOB: Tighten the adjustable knob in the steel pipe to ensure optimal strength and stability no matter the umbrella's pole size EASY STORAGE: Simply remove the steel tube for a slim design that lets you store the base in compact space during the winter and other times of non-use; OVERALL DIMENSIONS: 19.5"(Dia) x 14.5"(H) &lessthan;b&greaterthan;Specifications:&lessthan;/b&greaterthan; &lessthan;br&greaterthan;Overall Dimensions: 19.5"(Dia) x 14.5"(H) &lessthan;br&greaterthan;Pole Opening: 1.9"(Dia) &lessthan;br&greaterthan;Maximum Fill Capacity: 55 lbs. (Sand) &lessthan;br&greaterthan;Maximum Fill Capacity: 18L (Water) &lessthan;br&greaterthan;Weight: 5.1 lbs. &lessthan;br&greaterthan;Material: HDPE Plastic, Steel &lessthan;br&greaterthan;Umbrella not included &lessthan;br&greaterthan;Minimal assembly required (with instructions) &lessthan;br&greaterthan;For Residential Use Only&lessthan;p&greaterthan;BCP SKU: SKY6439&lessthan;/p&greaterthan;