I have been looking for bulbs that match the base of my stained glass parrot lamp. It has a candelabra base and a narrow opening, and the narrowest candelabra's lamps are so dim that the lamp is useless. These are beautiful and bright! They fit perfectly and light up the birds better than the shorter lamps I've used. The top bird in the picture is the old lightbulb and the bottom bird is the new lightbulb. It doesn't show up well in the photos, but the eyes and beak underneath are much better lit!