Concave Cylindrical 5.0 mm (T1-3/4) Discrete LEDs (Light Emitting Diodes) emit light that is as bright at its edges as it is in the center. Concave lenses improve the quality of the light beam by spreading out the collimated beam of light that LEDs typically emit. These high-intensity LEDs produce illumination that is bright even in direct sunlight, making them excellent sources of illumination for applications such as backlighting, medical equipment, and illuminating channel letters. Sturdy leads are provided for wire wrap applications. Select from six sunlight-visible colors: Green (525nm and 568nm), Cool White (8000K), Blue (461nm), Yellow (596nm and 585nm), Red (655nm, 660nm, and 630nm), and Orange (606nm).