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 secure it using the provided tightening mechanism Wide Application - The umbrella hole ring plug fits most umbrella types, including beach umbrellas, market umbrellas, and traditional patio umbrellas. 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: 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