Flexible Design: This sturdy umbrella stand is suitable for 2.5-3.8cm umbrella poles of different diameters, can be firmly fixed on the balcony square railing and bench, etc. Easy Installation: The umbrella clamp can be quickly installed, the large clamp can be fixed anywhere you want, attach it to benches, fences, bleachers, tailgates, boats, poles and more, and the position can be changed arbitrarily. Durable Material: Made of heavy steel, very strong, black paint surface treatment, rust-proof, durable. Space Saving: With the accessories on the balcony railing, you can leave more space for use. Product Dimensions: Length x Width x Height: about 13 x 11.5 x 15 cm.