The candelabra base bulb, also known as the candle or torpedo bulb because of its shape, is made for an E12 or a C7 base. With an adapter, it can fit a standard socket (the screw in base).
The candelabra bulb gives out good light for its size and comes in white, warm white and day light versions. It also comes in different shapes, sizes and colors, as well as fluorescent (CFLs) and incandescent bulbs, and with candle flame and wavy tips. You can also get bulbs that flicker.
The bulb is used in nightlights, ceiling fan light kits, refrigerators, stove hoods, exit lights, table and floor lamps, bathroom vanity strip lighting and chandeliers, as well as for mood lighting.
Adapting the Light Bulb Base
An adapter, known as a candelabra to standard adapter, is available that can fit the candelabra base bulb (E12) into a standard (E26) socket. You'll probably need the adapter for some chandeliers or other fixtures that use a standard socket.