ToolUSA 6.25" Long, 120v Fluorescent 60 Hz Replacement Bulb For Lamps: LI-11978-Z02 : ( Pack of 2 Bulbs ) PL 13 watt, 4 pin, Single Tab on side, 6400K Natural Day Light, High Definition Life - 8,000 Hours PL 13 watt, twin tube, 4 pin straight, with single tab Replacement for Plusrite 13865