About This Product This umbrella base stand supports your patio umbrella so you can relax outdoors. Made from cement and powder-coated steel, this freestanding base weighs a sturdy 40lbs/55lbs. and is stain-resistant. This base is adjustable and can fit umbrella poles from 1.37" to 1.9" in diameter. The tube also features a tightening knob, for additional stability. This base is 17.7" square and fits beneath most patio tables. An umbrella is sold separately. Features The versatile base's tube includes multiple cap sizes to fit umbrella poles with diameters 1 3/8", 1 1/2", and 1 8/9". This concrete-weighted umbrella base is made of solid powder-coated steel with cement to provide solid support and durability. The bottom of the umbrella is of moderate thickness, which provides enough weight for the umbrella but also provides safety protection for the customer without fear of tripping. This umbrella base stand features a hand-turn tightening knob. Tighten the adjustable knob in the steel pipe to ensure optimal strength and stability no matter the umbrella's pole size. Easy to install, no additional tools required. It could suitable for different decor designs, you could put it on a balcony, yard, or beside the swimming pool.