Korky Large 3 in. Toilet Tank to Bowl Gasket is designed to provide a reliable and universal fit for specific toilet models manufactured after 2000. This gasket features a sponge rubber construction with a 3-inch inner diameter, 4-1/4 inch outer diameter, and 1-1/8 inch thickness, making it suitable for most 3-inch two-piece toilets. It is compatible with a wide range of popular brands and models, including American Standard Cadet 3, Champion series, AquaSource, Crane Sure Flush, Eljer Diplomat, Gerber Avalanche, Jacuzzi Era, TOTO Drake, and many others. Please note that this gasket is not compatible with Kohler toilets. Installation is straightforward, ensuring a secure seal between the tank and bowl to prevent leaks and maintain optimal toilet performance. Model Number: 480BP