Jaenmsa R7S Bulbs,5 Pack Halogen Bulbs R7S T3 118mm 500W 120V,J Type Halogen Light Bulb with Long Lifespan,120 Volt Double Ended Light Bulbs for Work,Security,Landscape Lights,Dimmable,4.6 Inch - Amazon.com
R7s 500W 118mm - 110v – Casell Lighting
GE 500w 120v T3 R7s 4.65in Double Ended Clear Halogen Light Bulb – BulbAmerica