|+Shifter Tap designed by Shen Di, It obviously inspried the gearbox of the car. This Shifter Tap looks like a car's gearbox. If you want to change a flow of the water, you just change the position of shifter. I have a question, how to control the water temperature? But it is still a good idea, Shen Di claims that "+Shifter can be used to change people's behavior so as to achieve the purpose of water conservation".