These globes are specially designed to fit within the small holes of Himalayan Salt Lamps and Selenite Lamps. Due to their small size, and the wattage of these globes make them very fragile. To extend the life of your globe please ensure they are screwed tightly into the light fitting and do not move the lamp while it is on. Salt lamps are designed to stay on 24/7 and turning them on and off will blow these small globes. Small and large power surges will also shorten the globes life. With proper care, these globes can last for months.