The 3/8″ end connects to the 3/8″ end of the t-adapter. The 1/4″ end connects to the hot water bidet inlet of the Neo 250 or 320. This is an optional metal hose which replaces the polyurethane (PU) 10 ft hose that comes with the Neo 250 or 320.

Note: To use this hose, you will also need a ⅜” x ⅜” x ⅜” t-adapter.