This attractive 20-lb Resin Half-Round Umbrella Base from Island Umbrella can hold up to 9-ft half round or square patio umbrellas. This base is designed to be placed up against a wall, window or sliding door where a full umbrella base just won't work. Crafted from impact and weather- blended poly resin, this base won't rust or crack. It features a brown textured corrosion- finish that will never need to be repainted. The rust-, powder-coated stem design has a built in tension knob to firmly secure your umbrella pole in place. Accommodates up to 1.89-in diameter poles. An affordable alternative to more expensive metal base designs!