This is a Westcott Fluorescent Five Pack of Edison base screw-in bulbs for the Westcott Spiderlite TD5 fixture. It consists of four 50 watt and one 20 watt fluorescent bulb (for the center). They are all daylight balanced, long-life, flicker-free bulbs.
Fluorescent Lamp Five Pack - 4x50, 1x20 Watts/120 Volts
20 Watt Screw-in Fluorescent Bulb