Product includes: 12 pieces umbrella replacement parts, including 2 sets (6 pieces) umbrella hole rings in 3 sizes: 4.8 cm, 3.8 cm and 3.3 cm inner diameter (can be be assembled), 4 pieces of 40mm M8 clamping star and 2 oblique mouth parasol support pipes; ideal for stabilizing and aligning patio umbrella bases. Product size: 4.8cm, 3.8cm and 3.3cm, meet most umbrella pole diameter needs, matching size will be great for tightening umbrella pole, can protect your umbrella from scratches and dents on the umbrella pole. Premium Material: The umbrella base accessories are made of high quality plastic, sturdy and durable. With good extrusion resistance, high temperature resistance and weather resistance, durable. With good fixing performance, the replacement screws are made of premium plastic and stainless steel, sturdy and not easy to break. Easy to install: Choose 3 sizes of umbrella rings according to the diameter of the umbrella poles, insert the umbrella pole into the base, then