Concrete cube-shaped wall lamp Kool for accent lighting The wall lamp Kool enchants the interior with an up-and-down accent. With its concrete look and minimalist design, it picks up on two modern design trends at once. The body is made entirely of grey cement. Only the bracket is made of metal and is concealed inside. The G9 socket is also located here. The light of the LED bulb to be used is emitted through the vertical openings and creates decorative cones of light on the wall.