Universal 2” Toilet Tank Flapper. Brand New! Only $5. This is the the rubber valve that sits at the bottom of your toilet tank and controls the flush.
Product Details:
• The black rubber disc with two arms is the flapper itself. The arms clip onto the overflow tube. The number molded on the back 138003-501 is the manufacturer's part number - this is a very standard 2-inch universal style used by American Standard and many others.
• The metal bead chain connects to the toilet handle lever. When you lift the handle, it pulls the flapper up to let water rush into the bowl.
• The little yellow foam disc on the chain is a float. It keeps the flapper buoyant so it stays open a bit longer for a full flush. You can slide it up or down the chain to adjust