Metal Umbrella Holder for Beach, Table, and Chairs, Stainless Steel Clamp Description: The large, strong clamp can be hooked onto any surface (0-2.4 inches) and can be attached to bleachers, benches, tailgates, boats, posts, fences, and more. The 1.5-inch diameter tube with a screw securely holds the umbrella and allows you to adjust the height quickly and easily. It can be used for umbrellas, flags, and fishing rods. You can adjust the hole diameter by tightening the screw. The maximum thickness it can clamp is 2.4 inches. If you're looking to replace a large, heavy umbrella holder, this is definitely a smart choice. Designed to provide instant and convenient shade, it's perfect for covering barbecue grills, sporting events, outdoor work, and other recreational activities. Specifications: Material: Stainless steel. Umbrella mounting opening diameter: 3.8 cm/1.5 inches. Size (L x W x H): 3.94 x 3.94 x 6.1 inches. Package includes: 1 umbrella stand. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurements.