[FLEXIBLE DESIGN] This heavy duty umbrella bracket is suitable for 1.5-2 inch umbrella poles of different diameters, can be firmly fixed on the square balcony railing and bench, etc. [ MATERIAL] Made of heavy steel, very strong, black paint treatment, antirust, to use. [EASY INSTALLATION] The umbrella clamp can be quickly installed, Can be fastened to , fences, tailgates, boats, poles, etc. [STABILITY] umbrella clips are used at the same time to increase the stability of the umbrella [SPACE SAVING] Thanks to the accessories on the balcony railing, you can leave more space for using. Quantity:4Pcs Colour:Black Material:Metal Package Contents: 4 * Heavy Duty Patio Umbrella Holder 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.