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 correct sleeve depending on the parasol's diameter 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 attach a tube with a diameter of approx. 26mm. The tube also has a slanted sleeve on the 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 discarding it, just install it, and you will have a new parasol base. Note: The parasol tube is supplied alone, the parasol and base are not included. When you receive it, you will see a screw hole on the underside of the parasol tube holder. Simply connect the sleeve to the other end of the base with the included screw and the rest of the accessories and tighten it slightly with a wrench. The robust parasol tube holder can be attached to concrete slabs, granite slabs, iron plates, wooden tables, or marble slabs, etc. It is suitable for both private and commercial use. It is an ideal partner for cafes, beaches, resort hotels, water parks, barbecue restaurants, and other entertainment venues.