Durable materialThe universal umbrella stand is made of high-quality plastic and metal screws, which are fixed and wear-resistant and can be used for a long time. It has excellent properties Anti falland anti-compression, ensuring locking and good performance. Non-slip zigzagAs our product adopts non-slip zigzag design, the umbrella can be fixed more stably 360 degree adjustableThe universal adapter can be rotated 360 degrees for your convenience. Screw rotation can be fine-tuned for more angle options. Adjustable Tube DiameterYou can adjust the tube diameter by adjusting the knob attached to the umbrella from 12mm to 28mm. Widely UsedEuropean-style hanging chair, fishing board, knight fishing chair, golden pavilion fishing chair, suitable for most fishing chairs. This product can be used to attach umbrellas, barb holders,fish keepers and lures. The ideal tool for rainy days or hot summer days. Black Universal Umbrella Holder - All internal threads are imported pure copper, which can be locked without falling off. Specification: material: plastic Size: 16*11cm