Protect your drain from becoming clogged with the Danco drain stopper. It prevents unwanted debris and foreign objects from slipping down the drain. The strainer features a unique lift-and-turn style allowing for easy use. The heavy-duty brass stopper and shaft provides strength and durability. The stopper has two thread sizes: 5/16 in. on one end and 3/8 in. on the other. It replaces rapid fit for Sterling and is theft resistant.