Triangle Bulbs T30013 - F4T5/D, 4 Watt, T5, 6500K Daylight, 6" Straight Fluorescent Tube Light Bulb 4 watt T5 Fluorescent Daylight (6500K) light bulb 8,000 Life Hours 6 inch fluorescent tube, G5 Mini Bi-Pin Base 145 Lumens, CRI: 85 F4T5/D Day-Light