Sturdy Umbrella Stabilizers - These stabilizers make the umbrella pole fit more tightly into the stand base, preventing possible accidents or damage to the umbrella Easy to Install - It takes only 2 minutes to complete the installation. 3 steps: 1. Place the base stabilizer into the bottom of the umbrella stand base. 2. Choose the right size from the 2 sizes of ring parts provided (separate them first) and place it on top of the stand base. 3. Place the umbrella into the base and secure it with the given wire Wide Application - The ring plug for the umbrella hole is suitable for most umbrellas, such as beach umbrellas, market umbrellas, and traditional patio umbrellas. The sturdy material enables the adapter to be used in a wide range of conditions such as beach, balcony, backyard and swimming pool Material: Metal + Plastic Color: Black Package Contents: 1 x Kit (8 pieces) Only the above package contents, other products are not included. Note: Light reflection and different monitors may cause the color of the item in the picture to be slightly different from the actual item. The measurement allowable error is +/- 1-3cm.