Narva 18w PL-L (Also Known as Biax-L,Lynx-L, Dulux-L and TC-L) Energy Saving Long Light Bulb 4-Pin 865 [6500k] Daylight Colour 18w PL Energy Saving Light Bulb 100w 4 Pin 6400k Hours: 10,000 hours Cap Base L 2G11 4 pin Energy Efficiency Rating A Length 22.7cm