This is a National Palook Ball Spiral light bulb (the company changed its name from National to Panasonic in 2008). It is unused and has been stored at home since purchase. I am selling it because I no longer have a place to use it. It is a 26-base spiral light bulb with a power consumption of 20W, equivalent to 100W brightness. It is an unused item that has been stored at home after purchase. 100-watt type ball light bulb Palook color (daylight color is also available.) Spiral light-emitting tube for instant brightness Compact fluorescent lamp EFG25ED/20 Size: Length 135mm, Outer diameter 95mm