1. Top perforated mesh structure blocks large particles such as hair and fallen leaves. 2. Equipped with a red rubber sealing gasket, forming a tight seal when tightened, effectively preventing water leakage at the interface. 3. Precision threaded interface, quick and easy to install and remove without tools; simply screw it directly into the designated interface of the hot spring pool. 4. High-quality plastic, resistant to SPA chemical corrosion, water-resistant, and UV-resistant, not easily cracked or deformed, suitable for long-term underwater operation in hot springs. 5. Size perfectly matches the corresponding inflatable SPA machine model, and will not take up extra space in the pool after installation.