1. With the overflow system to prevent water overflowing and the washbasin being overfilled.^ 2. Corp adopts to brass material, bond cover is big, more convenient and practical^ 3. The opening and closing system by light finger pressure on the drain is great, easy to use.^ 4. Durable spring, our product has adopted the durable metal spring which greatly prolongs its long service life.^ 5. Convenient, chic and modern use, it is something essential for your bathroom.