The Solder Seal Reducing Spud Washer is a rubber washer designed for toilet installations. Specifically, this washer is flanged and shaped round, with dimensions of 2 inches by 1 1/4 inches (W305). It is suitable for use in bathrooms and is compatible with universal brands. This Spud Washer is an essential part for toilet installations, ensuring a tight and leak-proof fit for the spud connection.