Patio Umbrella Holder 【Triple Knob for Stable】Heavy duty three knob patio umbrella holder clamp suitable for 1.3-2.0 inch umbrella poles of different diameters,firm and not easy to break, the umbrella pole can support umbrella stably and fixed to square balcony railings, benches etc more securely. 【Premium Material】Deck mount umbrella holder made of heavy steel with high-temperature powder coating, waterproof and rustproof, stable structure make it not easy to break and deform, durable for long-term outside use. 【Two Ways of Install】Parasol umbrella stand holder comes with two kinds of installation screws, method 1,the umbrella stand can be fixed directly to the wooden board with nail screws, method 2, fixed directly to the railing with iron plate and stainless steel screws, making the umbrella stand easier to move at will, due to the accessories on the balcony railing to saving more space. 【Easy Installation】The outdoor deck umbrella clip comes with two different screws, you can choose the right one for you to install, unique design allows to be mounted to patio or deck railing and moved quickly and easily, Product dimension about 3.9*3.5*11.4 inch. 【Space Saving】Keep the outdoor area cool and shaded without crowding your guests or taking up precious floor space with the innovative umbrella clamp, which could be used for support your parasols, flagpoles, wind poles, etc, used on deck, pool deck, benches, bleachers, tailgates, boats, poles, fences, coffee shops, restaurants etc.