Globe Electric 7-watt enersaver chandelier CFL light bulb with a candelabra base and a medium base converter which allow you to use this bulb on a candelabra or medium based fixture, 40-watt output. These energy saving light bulbs can last 10 times longer than a regular bulb. It will save money as well. Globe enersaver CFL bulbs provide the same light as a soft white bulb while using fewer watts. Our new packaging is much more user friendly and better for the environment. You can use them in numerous places including table lamps, chandeliers and standard applications. The base is a medium base. Guaranteed to last 9 years based on 4 hours use per day at 120-volt. Electricity cost savings based on rated life of 12,000 hrs.