1. Built-in spring device, strong toughness, bouncing without stuttering 2. Closed without gaps, odor and pest control 3. Detachable filter, double filtration, easy to clean 4. Fast water storage/drainage, unobstructed, easy to deal with the daily drainage of the family 5. Sensitive pressure, pop up and drain quickly 6. ABS body + brass bouncing core, anti-corrosion and anti-rust, sturdy and durable 7. 99% basin universal, without tools, plug and play 8. Installation aperture: large caliber models 33-40mm, small caliber models 29-32mm 9. Material: 304 stainless steel, copper, ABS 10. Size: large caliber model about 8 x 6 x 3cm, small caliber model about 6.6 x 5.9 x 2.2cm
