- Anti-odour and anti-insect design: this sink drain assembly includes a double anti-odour and anti-insect barrier with an automatic closure to block when there is no drain, helping keep the area fresh and clean. - Flexible drain connection: the drain hose can be mounted on the bottom or the side of the sink, compatible with divider, drawer, wall drain, and floor drain configurations. - Easy installation: no tools required to connect the sink drain pipe; fits sink holes from 1.6 inches to 1.96 inches (40 mm to 50 mm) and can be used for both sinks without overflow and overflow sinks. - Corrosion resistant: the pop-up drain plug is made of brass and stainless steel for durability and resistance to corrosion and rust; the flexible drain pipe is made of high temperature and corrosion resistant plastic for long-lasting performance. - Use scenarios: - Kitchen sink with alternate drain configurations (divider or drawer) needing odor control and easy installation. - Utility or laundry sink where a side or bottom drain enhances flexibility and compatibility. - Bar or bathroom sink requiring a compact, durable drain that resists corrosion and works with overflow or non-overflow installations.