Anchor a market or table umbrella with this 42 lb square patio umbrella base finished in powder-coated steel for years of outdoor service. Two included adapters fit poles measuring 1.6 inches or 1.9 inches in diameter, and the adjustable tightening knob secures the pole quickly when wind picks up. Anti-slip footpads steady the base on pavers, decks, and uneven yard surfaces, and the clean all-black finish slips beneath patio tables without drawing attention.