attwood Two Pack LED Mini Courtesy Light, 1-Inch, White Compact - only 1" in diameter Quick and easy installation - simply drill a hole and press fit Attwood presents the most energy efficient LED marine lights in the world. Through the use of proprietary optical design techniques, we've optimized our lens design to harness nearly 90% of all light being generated by the LED. As the emerging leader in marine lighting design, Attwood understands the demands of the marine environment.