[ADJUSTABLE DESIGN]Patio umbrella bracket is suitable for 1.5-2 inch table/offset umbrella poles, By tightening the 4 fixed knobs on the patio umbrella holder to adjust the hole diameter. Can be firmly fixed on the square balcony railing and bench, etc. [WINDPROOF UMBRELLA HOLDER]The patio umbrella stands made of stainless steel provides better stability, and the umbrella holder stand have solid full welding line, which are not easy to break. So your patio umbrella can stand stably in the wind without moving or rotating. [STAINLESS STEEL MATERIAL]Made of high quality stainless steel material with a black coated , that makes umbrella holder bracket -resistant and rust-resistant, and the deck umbrella bracket provides exceptional stability and durability [EASY INSTALLATION]The umbrella clamp can be quickly installed, can firmly fix the base on the wooden post. [SPACE SAVING]This umbrella stand outdoor is an must have bracket for use on deck railings. Perfect for using it on any corner or surfaces like decks, , tailgates, boats, fences, etc. Colour:black Material:Stainless steel type:Flat Mount Package Contents: 1 x Patio Umbrella Holder kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.