Set of 2 Umbrella Clamp Stand holds the umbrella securely without drilling Fits umbrella poles with a diameter from 7/8' to 1 1/4', featuring 1 1/2' max. clamp opening, suitable for table or railing up to 1 1/2' in thickness Can be installed vertically or horizontally on the umbrella pole, making it applicable to bistro tables or balcony railings Crafted by heavy-duty galvanized steel for greater hardness and rust resistance Ideal for patios, balconies, bleachers, benches, fences, pool decks, etc.