STERL LIGHTING 2 Bulbs FML27/65 FML 27 Watt Quad Tube Compact Fluorescent Light Bulbs, 6500K Color Temperature, 4-pin GX10q-4 Base Energy efficient 27W compact fluorescent bulb equivalent to 100W ordinary bulb Compatible with NatureBright Full Spectrum Floor Lamp 4-Pin quad bulb. 6500 Kelvin color temperature Bring the outdoors light in by simulating natural daylight Natural Daylight that is good for eyes, Great for Reading Sewing and other tasks which require bright daylight