Heavy Duty Deck Mount Umbrella Holder, Enhanced and Fully Welded Steel Patio Umbrella Base up to 2'' Poles, Outdoor Umbrella Light Monitor Flag Stand for Floor, Balcony, Decks, Docks

This umbrella holder is heavy-duty alloy steel with professional anti-rust coating for ultimate outdoor durability and stability | At the joints, we have added four triangular plates and fully welded to ensure maximum durability and long-term reliability | Enlarged 7.1" x 7.1" base plate provides a rock-solid foundation to ensure the umbrella less prone to tipping over | Upgrade#1) - Use square tuber which has two contact surfaces with your umbrella pole and firmly grasps it | Upgrade#2 - We used a long iron card to expand the contact surface with the pole, so that it can be fixed most firmly | Fit pole diameter 1"-1.7", by removing the long card inside, it fits max 2 inch