Southwire 500-Watt EQ T10 Bright White Mogul Base (e-40) Halogen Light Bulb in the Tube Light Bulbs department at Lowes.com
500W LED Floodlight 67085 Lm 5000K IP66 UL DLC | LEDRadiant
Amazon.com: lumenivo R40 500 Watt Pool Bulb Replacement for Halco R40FL500/HG Incandescent Flood Reflector Inground Pool Light Perfect for Night Swimming - E26 Medium Screw Base - Frosted Glass - 120V :
SANSI 500-Watt EQ A21 Daylight Medium Base (E-26) LED Light Bulb in the General Purpose Light Bulbs department at Lowes.com
Southwire 500-Watt Portable Halogen Work Light L20 - The Home Depot