【Dimensions】: Umbrella Clamp Balcony Stand Height x Width x Depth: about 15.5 x 11 x 10 cm. Inner diameter: 3.8 cm; Clip adjustment range: 0-6 cm. Made of black steel. Can be securely attached to square balcony railings, benches, etc. The metal parasol base is ideal for securely attaching the parasol to the balcony railing. 【Easy to install】Umbrella Clamp Balcony Stand is suitable for various garden and patio parasols and can be attached to poles of different shapes and sizes, which is very convenient. No tools required. You just need to attach it to the railing, table top, deck, grandstand, etc. with a thickness of 6 cm, tighten the screws to fix it, then place the umbrella on the metal tube with an inner and outer diameter of 4 cm and finally tighten the screws. 【Stable and Durable】 The metal umbrella clamps of the parasol stand are made of durable metal, including thumb screws. Thanks to the opening at the bottom of the parasol stand that allows rainwater to drain, you don't have