SANEI Toilet Tank Ball Water Level Compatible with Japanese and Western Style (Sanei) Multi-purpose Tap, ABS, Multi-type, Adjustment, Water-saving

This is a universal toilet tank ballcock compatible with most commonly used types of toilets. (It can be used with both Japanese and Western-style toilets.) The water level can be adjusted by up to 10 cm, which helps save water. The nut goes through easily, so there's no need to turn it, making tightening effortless. This toilet is not compatible with models that have a handwashing basin in the corner, a bottom water supply, or a high-tank toilet.