The Fluidmaster 800P-001 Dual Flush Push Button Replacements are designed to fit most dual flush valve tank heights. The rods can be trimmed to fit various tanks, and the buttons measure 48mm. Simple and easy to install with clear instructions provided this model is perfect for quick DIY toilet repair job. Built durable from a brand trusted by toilet manufacturers worldwide. Dual flush allows you to use only the amount of water needed per flush, for liquids, or solids. Quickly enhance your toilets look with replacement buttons in a shiny chrome finish, and restore your toilets flush performance. For use in Tank Lid Mount Dual Flush Valve Toilets only.