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The tap water always flows straight downwards, if you want to turn it up a little more, the water sprays out of the wash tank and you get all wet."flex." is made of a simple rubber tube coating the memory metal ring at the front part of the tube.Pinch "flex" to control the water when you wash different kinds of dishes, you'll find it's a better way to do washing as well as treasuring our water resources.
National Cheng Kung University