Sylvania 64702 - 500W R7S Base Linear Halogen Bulb - *DISCONTINUED*
10 x Linear Tungsten Halogen Security 100w 200w 300w 500W R7S 118mm 78mm 240v | eBay
Feit Electric 500-Watt EQ T3 Dimmable Bright White Tubular Rough Service Halogen Light Bulb (2-Pack) in the Halogen Light Bulbs department at Lowes.com