Stop reaching into deep, dirty, greasy sink water to pull the drain plug—and filling your gloves with that mess, too. This waste drain valve is for 3-1/2" sink drain openings. The waste drain has a valve with a twist handle on the underside of the sink when installed. Just reach down and twist the 10" handle to open the valve and drain the sink. The solid brass waste drain valve has a 1-1/4" overflow outlet with cap included, and 2" NPS male outer threads and 1-1/2" NPT female inner threads. The drain's strainer, flange, and handle are all constructed of stainless steel for durability and corrosion resistance. The waste drain measures 4-1/2" in diameter with flange, 14-1/2" long with twist handle, and 4-1/2" tall. The twist waste drain valve is NSF and CSA listed.