Product includes: 6 pieces of umbrella supports, including 3 umbrella hole rings and 1 umbrella holder tube with an oblique mouth, 2 star screws for manual tightening. Excellent for stabilizing and aligning the bases of garden umbrellas. Product dimensions: The umbrella hole rings have 3 sizes: 1.9 inches, 1.5 inches, and 1.3 inches in internal diameter (perhaps assembled together). They fit most umbrella pole diameters. The corresponding size will be excellent for tightening the umbrella pole, and can better protect your outdoor umbrella. High-quality material: The umbrella base accessories are made of high-quality plastic, sturdy and durable. They have good extrusion resistance, high temperature resistance, and weather resistance. With good fastening performance, the replacement screws are made of high-quality plastic and stainless steel, sturdy and not easy to break. Easy to install: Use the umbrella rings according to the diameter of the umbrella poles, insert the umbrella pole