The Rubbermaid Commercial Products FG505012 Stock Tank Drain Plug in black is a durable and versatile plumbing accessory made of plastic. Designed for use with American Standard and Rubbermaid Commercial stock tank bags, this square-shaped plug includes drain plug and gaskets for easy installation. With a unit quantity of 1 and originating from China, this product is perfect for maintaining proper water flow and preventing leaks in your plumbing system.