Are you on a mission to replace burned-out incandescents with LED’s, StarLights Replacement Bulbs are a huge improvement. All the LED’s rotate on the base to face in the intended direction, meaning you don’t have to fool with reflection or wasted lighting to get what you want lit. This is also the only water resistant rotating LED bulb in the world. Lasts 100 TIMES LONGER than a standard bulb (60,000 hour life expectancy). It fits most RV fixtures.