The rubber sealing ring gasket included in this toilet tank accessory set is specifically designed to fit the base of the water inlet valve. Its robust design ensures a leak-proof connection, essential for the proper functioning of your toilet. This gasket is easy to install and replace, making it a convenient solution for both DIY enthusiasts and professional plumbers. Features -Color:Multi -Material:Rubber -Size:4.20X4.20X1.20cm/1.65X1.65X0.47in -Size:4.50X4.50X0.10cm/1.77X1.77X0.04in -Size:4.00X3.50X1.20cm/1.57X1.38X0.47in -Leakproof design: the rubber sealing ring is engineered to prevent leaks, providing peace of mind and a dry bathroom. -Universal application: fits various onepiece toilet tanks, making it a versatile choice for different toilet models. -Efficient flushing: the reliable inlet valve design ensures efficient and powerful flushing, improving toilet performance. -Durability: prevents the bottom sealing ring from aging, ensuring durability and reducing maintenance needs. -Complete assembly: offers a full set of toilet inlet valve components, making it convenient for users to purchase and install Package list: 5 pcs x 1 set (4pcs rubber pads, 4pcs nuts, 4pcs toilet seal washers )