This stand is made of quality steel, strong, durable and corrosion-resistant. Height=30cm, diameter=5cm, with 2 extra PVC reducing rings with different diameters (4cm /3.2cm). You can choose the right sleeve according to the diameter of the parasol, and then adjust the screw knobs on the side to make the parasol more stable. This way, the parasol will not wobble easily, even on windy days. The parasol tube is perfect for parasols with a diameter of 32mm-50mm, and thanks to the two adjustable screws, it is also possible to fix a tube with a diameter of about 26mm. The tube also has a beveled sleeve inside to improve the grip on the pole. The base can be made more stable with a 60mm screw and three different types of metal rings. High-quality materials and welding process make the parasol tube more durable and long-lasting. You can continue to use your original purchased parasol base (marble, steel or plastic) without wasting it, just install it and you will get a new parasol base. Note: The parasol tube is delivered alone, the parasol and base are not included. When you receive it, you will see a screw hole on the bottom of the parasol tube holder. Just connect the sleeve to the other end of the base with the included screw and the rest of the accessories and tighten it a little with a wrench. The sturdy parasol tube holder can be attached to concrete slabs, granite slabs, iron slabs, wooden tables or marble slabs, etc. It is suitable for both residential and commercial use. It is an ideal partner for cafes, beaches, resort hotels, water parks, barbecue bars, restaurants and other entertainment venues.