Simple Deluxe 20 Heavy Duty Patio Market Umbrella Base Stand with Steel Holder Water Filled for Outdoor, Lawn, Garden, Round

2 adjustable turn knobs: Features two hand-turn tightening knobs for securing umbrella to the base, tighten the adjustable knob in the steel pipe to ensure optimal strength and stability no matter the umbrella's pole size,Holds various umbrella sizes: A wide range of application, ideal for holding most 6-10' umbrellas. Plastic inserts on top of steel pipe fit for Φ1.5 (38mm)-Φ1.9(48mm) umbrella poles. Suggestion: The base is more stable with the table,Rust proof and anti-corrosion material: Made of durable HDPE material, all weather resistant, the steel pipe is galvanized and would not be corroded easily. It has good solidity and would not let the umbrella tilt easily,Water or sand filling: The base can be filled with water or sand, has a maximum weight of 50 pounds, and can be easily transported when emptied. Base does not include water and sand. Do not fill with water at or below 32°F to prevent freezing and cracking,Applicable: Elegant and classic, it is suitable for family, villa, hotel, terrace, balcony, resort, water park, barbecue bar, western restaurant, beauty salon, outdoor leisure area, company leisure area, company rest area, etc.