Product includes: 12 pcs umbrella replacement parts, including 2set (6pcs) umbrella hole ring in 3 size: 1.9 inch, 1.5 inch and 1.3 inch in diameter inside (can be assembled together), 4pcs 40mm / 157inch M8 and 2pc hand knob thumbscrews Ideal for stabilizing and aligning patio umbrella bases. Product size: 1.9 inch, 1.5 inch and 1.3 inch outer umbrella ring, meet the needs of most umbrella poles, the matched size will be great for tightening the umbrella pole, can protect your umbrella from scratches and bumps 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 high temperature resistance. weather resistance, durable. With good fixing performance, the thread replacement screws are made of premium plastic and stainless steel, sturdy and not easy to break. Easy to install: choose 3 sizes of the umbrella rings according to the diameters of the umbrella poles, insert the umbrella pole into the base, then tighten the M8 Star hand knob and fix the umbrella to prevent it from slipping. Wide application : these eyelets meet most standard pole diameters on the market; Classic black color can match all your outdoor furniture and allow more space. Can be used on the patio table, beach, yard, garden, the balcony, the terrace and the swimming pool.