The T&S Brass B-3950-01-SB is a durable drain valve designed for efficient waste management in sinks. Featuring a twist handle for easy operation, it fits a 3-1/2" sink hole and includes an overflow tube kit to prevent water overflow. The removable strainer basket ensures easy cleaning and maintenance, while the 1-1/2" NPT male adapter and 2" NPT male outlet provide versatile installation options. This waste valve combines functionality with reliability, making it an essential component for any sink setup.