The Toto Style Replacement THU-500S 4Pk is a set of four generic replacement parts designed for Toto toilets. Specifically, these parts are compatible with the Toto model THU-500S. Ideal for home plumbing and fixtures, this product offers a convenient solution for maintaining and repairing Toto toilets effectively. Perfect for those looking to replace worn-out or damaged parts in their home plumbing system, this product provides a reliable and efficient choice.