Strong Umbrella Stabilizer - These stabilizers ensure a tighter fit between the umbrella pole and stand base, helping to prevent accidents or damage to the umbrella. Easy to Install - Setup in 2 minutes with 3 simple steps: 1. Insert the base stabilizer into the bottom of the umbrella stand base. 2. Select the appropriate size from the two included ring parts (separate them first), and place it on top of the stand base. 3. Insert the umbrella into the base and use the provided screw to secure it. Wide Application - The umbrella hole ring plug fits most umbrella types, including beach umbrellas, market umbrellas, and traditional patio umbrellas. The durable materials allow use in various environments such as beaches, balconies, backyards, and poolside areas. Material: Metal + Plastic Color: Black Package Contents: 1 x Replacement Parts Kit (8 pcs) Note: This package includes only the items listed. Other products are not included. Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.