Grandera Single-lever basin mixer 1/2" M-Size single hole installation GROHE SilkMove 28 mm ceramic cartridge temperature limiter GROHE StarLight chrome finish GROHE EcoJoy technology for less water and perfect flow GROHE FastFixation installation system GROHE AquaGuide adjustable mousseur 5.7 l/min smooth body flexible connection hoses min. recommended pressure 1.0 bar