Set of 30 Blue 3 mm LEDs for MK193 This is a set of 30 blue 3mm LEDs for the Velleman 3x3x3 LED Cube Kit (MK193). Features Quantity: 30 pieces Emitting color: blue Case color: water clear Luminous intensity (If = 10mA): 2200mcd Viewing angle: 25 Forward voltage: 3.2V Applicable current: 20mA Wave length: 475nm