The Quooker Flex is a combination of a boiling water tap and a mixer tap. It incorporates a pull-out hose for extra reach in your sink. When the hose is pulled out, it only delivers hot and cold water, not boiling water! The Flex is our most popular style and has many different ways of use. Turn your tap into a 5 in 1 by adding our CUBE system (hot, cold, boiling, sparkling + chilled)