The Genuine TOTO Universal Fill Valve by Korky is designed to replace all TOTO Fill Valves including: Drake, Eco Drake, Ultramax, and all other TOTO toilet models. Designed to fix no/slow refilling, running, and noisy toilets, the fill valve is quieter than other fill valves. The Genuine TOTO Fill Valve is very easy to install and adjust; no tools are required. Simply remove your old fill valve or ballcock, insert your new Korky fill valve, and adjust. The innovative twist-lock adjustment makes installation easy. Designed to fit more toilets, the fill valve adjusts to fit both large and compact toilet tanks.