Super Bright # The super bright LEDs output good enough brightness for your lighting applications, expecially for kitchen under lighting that has not enough natural light. Ultra Thin Light Puck # The pucks are constructed in an ultra thin lamp shell which is only 0.3inch of height. They are hidden undereath a cabinet, almost invisible until the lights turned on. Well Made # The puck lights are made of high quality aluminum alloy. Aluminum lamp shell is much firmer than plastic shell. Also, aluminum has much better heat dissipation ability, which is good for a longer working life for the LED lights.