Q100T3/CL/78mm/130V 100 WATT 78MM T3 HALOGEN R7S BASE, Q100T3/CL/78mm/130V R7S
10Pcs HALOGEN LIGHT BULB 220 240V 100W 100 WATT J TYPE T3 118mm (R7s) Halogen Bulbs|Portable Lighting Accessories| - AliExpress
Feit Electric 100-Watt EQ T3 Dimmable Bright White Tubular Light Fixture Halogen Light Bulb (2-Pack) in the Halogen Light Bulbs department at Lowes.com