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|The innovative twist-lock adjustment makes installation easy|Designed to fit more toilets, the fill valve adjusts from 7-3/4 to 13-1/2 in