Product Dimension：Friendly reminder, the specific data can refer to the picture. Due to manual measurement, there may be a little deviation from your measurement data, but the impact is not significant, thank you for your understanding. Adjustable：The width and diameter of the umbrella stand are adjustable and can be easily placed in different positions, so you can take the stand wherever you want to place your umbrella. This umbrella stand is ideal for use on balconies, gardens, terraces, etc., where there are railings, and tables are also possible. (Preferably in a square shape) Material：The stand is made of cast iron with a galvanized finish, which is resistant to oxidation and rust. Finally, the umbrella stand is made of heavy metal, which may be bulky or rough for your railings, so in order not to scratch your railing or your beloved umbrella tube, you can put some pieces of felt between the stand and the railing as protection against scratches. Easy Installation：The balcony