National Artcraft's 25 watt tube light bulbs have a standard Edison base and are clear and steady burning They measure 5" long, with the glass portion extending 3-7/8" from the socket The bulbs are 3/4" in diameter The base is made of brass to make installation and removal easier and to prevent corrosion For indoor use only

National Artcraft's 25 watt tube light bulbs have a standard Edison base and are clear and steady burning. They measure 5" long, with the glass portion extending 3-7/8" from the socket. The bulbs are 3/4" in diameter. The base is made of brass to make installation and removal easier and to prevent corrosion. For indoor use only. Individually boxed.