Product includes: 2 sets (6pcs) outdoor patio deck base replacement parts, including 1.5 inch umbrella hole bushing and 1.5 inch umbrella hole bushing 0.9x1.9 inch (can be assembled), 2pcs 40mm M8 threaded screw. Multiple combination can meet most of the pole diameter requirements, ideal for stabilizing and aligning the parasol patio feet. Product size: 1.5 inch and 1.9 inch outer umbrella ring, meet most of the umbrella pole diameter requirements. The size is great for tightening the umbrella pole. Can protect your umbrella from scratches and dents on the umbrella pole. Premium material: The umbrella stand accessories are made of high quality plastic, sturdy and durable. With a good extrusion resistance, high temperature resistance and weather resistance, they are durable. The threaded replacement screws are made of high quality black plastic and stainless steel, sturdy and not easy to break. Easy to Fix Installation: Choose 2 sizes of umbrella rings according to the diameters of the