Strong Umbrella Stabilizer – Ensures a secure fit between the umbrella pole and stand base to help prevent tipping or damage. Easy to Install – Setup takes approximately 2 minutes. Simple 3-step process: 1. Insert the base stabilizer into the bottom of the umbrella stand base. 2. Select the appropriate ring size from the two included sizes (separate the rings first), then place it on top of the stand base. 3. Insert the umbrella pole and tighten using the included threaded fastener. Wide Compatibility – Designed to fit most standard umbrellas, including beach umbrellas, market umbrellas, and patio umbrellas. Suitable for use on beaches, balconies, backyards, and poolside areas. Material: Metal and plastic. Color: Black. Package Includes: 2 x Replacement Parts Kits (8 pieces total). Note: Actual product color may vary slightly due to screen settings and lighting conditions. Measurement tolerance: ±1–3 cm.